{
  "_meta": {
    "note": "Copy of the tier fields now also stored in sources.json; kept as a standalone review table.",
    "tiers": {
      "T1": "guideline, society or government source",
      "T2": "peer-reviewed journal article or review (journal, year, article type recorded)",
      "T3": "Wikipedia, Libre Pathology or other community text",
      "T4": "anything else"
    }
  },
  "sources": {
    "iccr-lung": {
      "tier": "T1",
      "tier_label": "Guideline / reporting standard",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "International Collaboration on Cancer Reporting (ICCR), a consortium of pathology colleges and societies; expert-panel reporting datasets used as national standards; synoptic checklist developed from the WHO 2021 taxonomy; not a journal article, no reuse licence found.",
      "license": "no explicit reuse terms found; paraphrase only"
    },
    "pmc7698816": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (retrospective cohort study)",
      "journal": "Cancers",
      "year": 2020,
      "article_type": "retrospective cohort study",
      "legitimacy": "Cancers (2020). Europe PMC publication types: research-article, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (confirmed from the Europe PMC licence element and the MDPI statement; see snapshots/pmc7698816-licence-evidence.txt)"
    },
    "pmc12308192": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (cross-sectional study (single centre, India))",
      "journal": "Iranian journal of pathology",
      "year": 2025,
      "article_type": "cross-sectional study (single centre, India)",
      "legitimacy": "Iranian journal of pathology (2025). Europe PMC publication types: research-article, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (confirmed; see snapshots/pmc12308192-licence-evidence.txt)"
    },
    "bracs-paper": {
      "tier": "T2",
      "tier_label": "Dataset paper (journal + preprint)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "BRACS dataset paper: published peer-reviewed in Database (Oxford) 2022 baac093; the cited text is the arXiv:2111.04740 preprint of it; the dataset itself is the source of the BRACS labels used in this thesis; the \"expert definition\" statements are the authors' annotation protocol, not a guideline.",
      "license": "Two versions, two licences. arXiv version (arXiv:2111.04740): arXiv non-exclusive distribution licence (abstract page links arxiv.org/licenses/nonexclusive-distrib/1.0/). Journal version (Database 2022, baac093, doi 10.1093/database/baac093, PMC9575967): CC BY-NC 4.0. Non-commercial research use; paraphrase with attribution."
    },
    "pmc8833401": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (review)",
      "journal": "Cancers",
      "year": 2022,
      "article_type": "review",
      "legitimacy": "Cancers (2022). Europe PMC publication types: review-article, Review, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (licence statement read on the page 2026-10-01)"
    },
    "pmc10216527": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (narrative review)",
      "journal": "Brain sciences",
      "year": 2023,
      "article_type": "narrative review",
      "legitimacy": "Brain sciences (2023). Europe PMC publication types: review-article, Review, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (MDPI open access licence statement read on the page 2026-10-01)"
    },
    "pmc9427889": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (minireview)",
      "journal": "Acta neurochirurgica",
      "year": 2022,
      "article_type": "minireview",
      "legitimacy": "Acta neurochirurgica (2022). Europe PMC publication types: Research Support, Non-U.S. Gov't, review-article, Review, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: established neurosurgery journal.",
      "license": "CC BY 4.0 (licence statement read on the page 2026-10-01)"
    },
    "librepath-anaplastic-astrocytoma": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2018; widely used as a quick reference; NC-SA licence, paraphrase only. Revision predates the WHO 2021 classification, so terms and grades may be outdated.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-astrocytoma": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2022; widely used as a quick reference; NC-SA licence, paraphrase only.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-brain-metastasis": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2024; widely used as a quick reference; NC-SA licence, paraphrase only.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-craniopharyngioma": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2019; widely used as a quick reference; NC-SA licence, paraphrase only. Revision predates the WHO 2021 classification, so terms and grades may be outdated.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-ependymoma": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2022; widely used as a quick reference; NC-SA licence, paraphrase only.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-ganglioglioma": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2022; widely used as a quick reference; NC-SA licence, paraphrase only.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-hemangioblastoma": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2025; widely used as a quick reference; NC-SA licence, paraphrase only.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-hemangioma": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2022; widely used as a quick reference; NC-SA licence, paraphrase only.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-lch": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2016; widely used as a quick reference; NC-SA licence, paraphrase only. Revision predates the WHO 2021 classification, so terms and grades may be outdated.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-lipoma": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2018; widely used as a quick reference; NC-SA licence, paraphrase only. Revision predates the WHO 2021 classification, so terms and grades may be outdated.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-medulloblastoma": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2019; widely used as a quick reference; NC-SA licence, paraphrase only. Revision predates the WHO 2021 classification, so terms and grades may be outdated.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-meningioma": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2022; widely used as a quick reference; NC-SA licence, paraphrase only.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-neuropath-tumours": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2022; widely used as a quick reference; NC-SA licence, paraphrase only.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-pilocytic": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2017; widely used as a quick reference; NC-SA licence, paraphrase only. Revision predates the WHO 2021 classification, so terms and grades may be outdated.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-pituitary-gland": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2022; widely used as a quick reference; NC-SA licence, paraphrase only.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-schwannoma": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2022; widely used as a quick reference; NC-SA licence, paraphrase only.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "librepath-sft": {
      "tier": "T3",
      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2016; widely used as a quick reference; NC-SA licence, paraphrase only. Revision predates the WHO 2021 classification, so terms and grades may be outdated.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "pmc10033642": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (narrative imaging review)",
      "journal": "Neuroradiology",
      "year": 2023,
      "article_type": "narrative imaging review",
      "legitimacy": "Neuroradiology (2023). Europe PMC publication types: review-article, Review, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: established neuroradiology journal.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc10791336": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (case report)",
      "journal": "Case reports in pathology",
      "year": 2024,
      "article_type": "case report",
      "legitimacy": "Case reports in pathology (2024). Europe PMC publication types: Journal Article, Case Reports, case-report. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY (version not stated on the page) (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc11089008": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (brief report / letter (small series of 7 spinal ependymomas))",
      "journal": "Acta neuropathologica",
      "year": 2024,
      "article_type": "brief report / letter (small series of 7 spinal ependymomas)",
      "legitimacy": "Acta neuropathologica (2024). Europe PMC publication types: Letter, brief-report, Research Support, Non-U.S. Gov't. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: leading neuropathology journal.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc11226565": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (case report)",
      "journal": "Cureus",
      "year": 2024,
      "article_type": "case report",
      "legitimacy": "Cureus (2024). Europe PMC publication types: Journal Article, Case Reports, case-report. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: open-access journal with light peer review; case reports carry the lowest evidentiary weight.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc11227055": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (case report)",
      "journal": "European thyroid journal",
      "year": 2024,
      "article_type": "case report",
      "legitimacy": "European thyroid journal (2024). Europe PMC publication types: Journal Article, Case Reports, case-report. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc11511714": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (review)",
      "journal": "Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery",
      "year": 2024,
      "article_type": "review",
      "legitimacy": "Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery (2024). Europe PMC publication types: Research Support, Non-U.S. Gov't, review-article, Review, Journal Article, Research Support, N.I.H., Extramural. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc11722003": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (case report)",
      "journal": "Cureus",
      "year": 2024,
      "article_type": "case report",
      "legitimacy": "Cureus (2024). Europe PMC publication types: Journal Article, Case Reports, case-report. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: open-access journal with light peer review; case reports carry the lowest evidentiary weight.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc12103695": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (case report)",
      "journal": "Cureus",
      "year": 2025,
      "article_type": "case report",
      "legitimacy": "Cureus (2025). Europe PMC publication types: Journal Article, Case Reports, case-report. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: open-access journal with light peer review; case reports carry the lowest evidentiary weight.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc12233036": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (case report)",
      "journal": "Cureus",
      "year": 2025,
      "article_type": "case report",
      "legitimacy": "Cureus (2025). Europe PMC publication types: Journal Article, Case Reports, case-report. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: open-access journal with light peer review; case reports carry the lowest evidentiary weight.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc12724472": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (case report)",
      "journal": "Cureus",
      "year": 2025,
      "article_type": "case report",
      "legitimacy": "Cureus (2025). Europe PMC publication types: Journal Article, Case Reports, case-report. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: open-access journal with light peer review; case reports carry the lowest evidentiary weight.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc12777031": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (case report)",
      "journal": "BMC neurology",
      "year": 2025,
      "article_type": "case report",
      "legitimacy": "BMC neurology (2025). Europe PMC publication types: Journal Article, Case Reports, case-report. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc13056813": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (case report)",
      "journal": "Frontiers in oncology",
      "year": 2026,
      "article_type": "case report",
      "legitimacy": "Frontiers in oncology (2026). Europe PMC publication types: Journal Article, Case Reports, case-report. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc13260794": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (retrospective observational cohort study)",
      "journal": "Frontiers in oncology",
      "year": 2026,
      "article_type": "retrospective observational cohort study",
      "legitimacy": "Frontiers in oncology (2026). Europe PMC publication types: research-article, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc13513445": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (narrative review)",
      "journal": "International journal of molecular sciences",
      "year": 2026,
      "article_type": "narrative review",
      "legitimacy": "International journal of molecular sciences (2026). Europe PMC publication types: review-article, Review, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc13605746": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (case report)",
      "journal": "Current oncology (Toronto, Ont.)",
      "year": 2026,
      "article_type": "case report",
      "legitimacy": "Current oncology (Toronto, Ont.) (2026). Europe PMC publication types: Journal Article, Case Reports, case-report. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY (version not stated on the page) (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc7170742": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (case report with literature review)",
      "journal": "The Pan African medical journal",
      "year": 2020,
      "article_type": "case report with literature review",
      "legitimacy": "The Pan African medical journal (2020). Europe PMC publication types: Review, Journal Article, Case Reports, case-report. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 2.0 (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc7536112": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (case report)",
      "journal": "Cureus",
      "year": 2020,
      "article_type": "case report",
      "legitimacy": "Cureus (2020). Europe PMC publication types: Journal Article, Case Reports, case-report. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: open-access journal with light peer review; case reports carry the lowest evidentiary weight.",
      "license": "CC BY (version not stated on the page) (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "pmc9422988": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (case report)",
      "journal": "Autopsy & case reports",
      "year": 2022,
      "article_type": "case report",
      "legitimacy": "Autopsy & case reports (2022). Europe PMC publication types: Journal Article, Case Reports, case-report. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY (version not stated on the page) (read from the Europe PMC full-text XML licence element and the PMC article page, 2026-10-01)"
    },
    "librepath-copyrights-licence-page": {
      "tier": "T3",
      "tier_label": "Libre Pathology licence page (record only)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Licence evidence page for Libre Pathology; no passage cites it; kept so the NC-SA wording is traceable.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
    },
    "pmc13042621": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (review)",
      "journal": "MedComm",
      "year": 2026,
      "article_type": "review",
      "legitimacy": "MedComm (2026). Europe PMC publication types: review-article, Review, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element, 2026-10-01)"
    },
    "pmc10358772": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (original research article)",
      "journal": "Frontiers in oncology",
      "year": 2023,
      "article_type": "original research article",
      "legitimacy": "Frontiers in oncology (2023). Europe PMC publication types: research-article, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element, 2026-10-01)"
    },
    "pmc10978634": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (multicentre retrospective study)",
      "journal": "Journal of neuro-oncology",
      "year": 2024,
      "article_type": "multicentre retrospective study",
      "legitimacy": "Journal of neuro-oncology (2024). Europe PMC publication types: research-article, Multicenter Study, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: established neuro-oncology journal.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element, 2026-10-01)"
    },
    "pmc9367316": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (review)",
      "journal": "Cancers",
      "year": 2022,
      "article_type": "review",
      "legitimacy": "Cancers (2022). Europe PMC publication types: review-article, Review, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (read from the Europe PMC full-text XML licence element, 2026-10-01)"
    },
    "pmc11861498": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (review)",
      "journal": "Head and neck pathology",
      "year": 2025,
      "article_type": "review",
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      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (systematic review)",
      "journal": "Journal of clinical medicine",
      "year": 2026,
      "article_type": "systematic review",
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    },
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      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (retrospective reappraisal of 23 cases)",
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      "year": 2026,
      "article_type": "retrospective reappraisal of 23 cases",
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      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
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    "librepath-luad": {
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      "tier_label": "Libre Pathology (community wiki)",
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      "year": null,
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      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
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    "librepath-lung-scc": {
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      "tier_label": "Libre Pathology (community wiki)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2016; widely used as a quick reference; NC-SA licence, paraphrase only. Revision predates the WHO 2021 classification, so terms and grades may be outdated.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
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    "librepath-non-invasive-breast-carcinoma": {
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      "year": null,
      "article_type": null,
      "legitimacy": "Libre Pathology: volunteer-edited community wiki for pathologists and trainees, not peer-reviewed, no named review board; revision 2017; widely used as a quick reference; NC-SA licence, paraphrase only. Revision predates the WHO 2021 classification, so terms and grades may be outdated.",
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      "journal": null,
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      "article_type": null,
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      "article_type": "original study (60 breast lesions, single centre)",
      "legitimacy": "Cureus (2023). Europe PMC publication types: research-article, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: open-access journal with light peer review; case reports carry the lowest evidentiary weight.",
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      "tier_label": "Society guideline",
      "journal": "Breast cancer (Tokyo, Japan)",
      "year": 2024,
      "article_type": "clinical practice guideline (Japanese Breast Cancer Society, 2022 edition)",
      "legitimacy": "Japanese Breast Cancer Society clinical practice guideline for pathological diagnosis, 2022 edition; published in Breast Cancer (Tokyo) 2024, flagged Practice Guideline in Europe PMC; society-issued, used as the national pathology guidance.",
      "license": "CC BY 4.0 (licence statement read in the article text 2026-10-01)"
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    "pmc10899116": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (original research article (AI grading model, multi-cohort))",
      "journal": "Nature cancer",
      "year": 2024,
      "article_type": "original research article (AI grading model, multi-cohort)",
      "legitimacy": "Nature cancer (2024). Europe PMC publication types: Research Support, Non-U.S. Gov't, research-article, Journal Article, Research Support, N.I.H., Extramural. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: high-impact specialist journal.",
      "license": "CC BY 4.0 (licence statement read in the article text 2026-10-01)"
    },
    "pmc11505874": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (retrospective cohort study)",
      "journal": "Diagnostics (Basel, Switzerland)",
      "year": 2024,
      "article_type": "retrospective cohort study",
      "legitimacy": "Diagnostics (Basel, Switzerland) (2024). Europe PMC publication types: research-article, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (licence statement read in the article text 2026-10-01)"
    },
    "pmc11729388": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (retrospective study)",
      "journal": "Thoracic cancer",
      "year": 2025,
      "article_type": "retrospective study",
      "legitimacy": "Thoracic cancer (2025). Europe PMC publication types: research-article, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (licence statement read in the article text 2026-10-01)"
    },
    "pmc11964577": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (observational inter-observer agreement study (13 experts, 10 cases))",
      "journal": "Histopathology",
      "year": 2025,
      "article_type": "observational inter-observer agreement study (13 experts, 10 cases)",
      "legitimacy": "Histopathology (2025). Europe PMC publication types: research-article, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: established general histopathology journal (British Society of Histopathology era).",
      "license": "CC BY 4.0 (licence statement read in the article text 2026-10-01)"
    },
    "pmc12153718": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (retrospective study)",
      "journal": "Cancers",
      "year": 2025,
      "article_type": "retrospective study",
      "legitimacy": "Cancers (2025). Europe PMC publication types: research-article, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (licence statement read in the article text 2026-10-01)"
    },
    "pmc12415442": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (original research article (AI pattern quantification, multi-cohort))",
      "journal": "MedComm",
      "year": 2025,
      "article_type": "original research article (AI pattern quantification, multi-cohort)",
      "legitimacy": "MedComm (2025). Europe PMC publication types: research-article, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (licence statement read in the article text 2026-10-01)"
    },
    "pmc12937821": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (narrative review)",
      "journal": "Biomedicines",
      "year": 2026,
      "article_type": "narrative review",
      "legitimacy": "Biomedicines (2026). Europe PMC publication types: review-article, Review, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY (version not stated in the licence statement) (licence statement read in the article text 2026-10-01)"
    },
    "pmc13116887": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (narrative review)",
      "journal": "Journal of clinical medicine",
      "year": 2026,
      "article_type": "narrative review",
      "legitimacy": "Journal of clinical medicine (2026). Europe PMC publication types: review-article, Review, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY (version not stated in the licence statement) (licence statement read in the article text 2026-10-01)"
    },
    "pmc13368955": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (case series (22 cases))",
      "journal": "Virchows Archiv : an international journal of pathology",
      "year": 2026,
      "article_type": "case series (22 cases)",
      "legitimacy": "Virchows Archiv : an international journal of pathology (2026). Europe PMC publication types: research-article, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: established pathology journal (European Society of Pathology).",
      "license": "CC BY 4.0 (licence statement read in the article text 2026-10-01)"
    },
    "pmc3357964": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (review)",
      "journal": "International journal of surgical oncology",
      "year": 2012,
      "article_type": "review",
      "legitimacy": "International journal of surgical oncology (2012). Europe PMC publication types: review-article, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY (version not stated in the licence statement) (licence statement read in the article text 2026-10-01)"
    },
    "pmc4071798": {
      "tier": "T2",
      "tier_label": "Peer-reviewed journal article (comparative observational inter-observer study)",
      "journal": "Diagnostic pathology",
      "year": 2014,
      "article_type": "comparative observational inter-observer study",
      "legitimacy": "Diagnostic pathology (2014). Europe PMC publication types: Comparative Study, Research Support, Non-U.S. Gov't, research-article, Journal Article, Observational Study. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: established open-access pathology journal.",
      "license": "CC BY 2.0 (licence statement read in the article text 2026-10-01)"
    },
    "pmc5932853": {
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      "tier_label": "Peer-reviewed journal article (review)",
      "journal": "Breast cancer research : BCR",
      "year": 2018,
      "article_type": "review",
      "legitimacy": "Breast cancer research : BCR (2018). Europe PMC publication types: Research Support, Non-U.S. Gov't, review-article, Review, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: established breast cancer research journal.",
      "license": "CC BY 4.0 (licence statement read in the article text 2026-10-01)"
    },
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      "tier_label": "Peer-reviewed journal article (review)",
      "journal": "Insights into imaging",
      "year": 2021,
      "article_type": "review",
      "legitimacy": "Insights into imaging (2021). Europe PMC publication types: review-article, Review, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded. Journal: European Society of Radiology journal.",
      "license": "CC BY 4.0 (licence statement read in the article text 2026-10-01)"
    },
    "pmc9406596": {
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      "tier_label": "Peer-reviewed journal article (review)",
      "journal": "Current oncology (Toronto, Ont.)",
      "year": 2022,
      "article_type": "review",
      "legitimacy": "Current oncology (Toronto, Ont.) (2022). Europe PMC publication types: review-article, Review, Journal Article. Indexed in PubMed Central / Europe PMC; open-access licence as recorded.",
      "license": "CC BY 4.0 (licence statement read in the article text 2026-10-01)"
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    "wp-adenocarcinoma-of-the-lung": {
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      "tier_label": "Wikipedia",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Wikipedia (revision 1368833512): crowd-edited encyclopedia, not peer-reviewed, very widely read; revision-pinned so the text cannot drift; CC BY-SA 4.0 share-alike.",
      "license": "CC BY-SA 4.0 (API siteinfo rightsinfo read 2026-10-01; text appended to the snapshot)"
    },
    "wp-adh": {
      "tier": "T3",
      "tier_label": "Wikipedia",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Wikipedia (revision 1374311709): crowd-edited encyclopedia, not peer-reviewed, very widely read; revision-pinned so the text cannot drift; CC BY-SA 4.0 share-alike.",
      "license": "CC BY-SA 4.0 (API siteinfo rightsinfo read 2026-10-01; text appended to the snapshot)"
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    "wp-dcis": {
      "tier": "T3",
      "tier_label": "Wikipedia",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Wikipedia (revision 1375701311): crowd-edited encyclopedia, not peer-reviewed, very widely read; revision-pinned so the text cannot drift; CC BY-SA 4.0 share-alike.",
      "license": "CC BY-SA 4.0 (API siteinfo rightsinfo read 2026-10-01; text appended to the snapshot)"
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      "tier_label": "Wikipedia",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Wikipedia (revision 1373667518): crowd-edited encyclopedia, not peer-reviewed, very widely read; revision-pinned so the text cannot drift; CC BY-SA 4.0 share-alike.",
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    "wp-invasive-carcinoma-nst": {
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      "tier_label": "Wikipedia",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Wikipedia (revision 1368882103): crowd-edited encyclopedia, not peer-reviewed, very widely read; revision-pinned so the text cannot drift; CC BY-SA 4.0 share-alike.",
      "license": "CC BY-SA 4.0 (API siteinfo rightsinfo read 2026-10-01; text appended to the snapshot)"
    },
    "wp-lung-scc": {
      "tier": "T3",
      "tier_label": "Wikipedia",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Wikipedia (revision 1322594337): crowd-edited encyclopedia, not peer-reviewed, very widely read; revision-pinned so the text cannot drift; CC BY-SA 4.0 share-alike.",
      "license": "CC BY-SA 4.0 (API siteinfo rightsinfo read 2026-10-01; text appended to the snapshot)"
    },
    "wp-udh": {
      "tier": "T3",
      "tier_label": "Wikipedia",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Wikipedia (revision 1217265694): crowd-edited encyclopedia, not peer-reviewed, very widely read; revision-pinned so the text cannot drift; CC BY-SA 4.0 share-alike.",
      "license": "CC BY-SA 4.0 (API siteinfo rightsinfo read 2026-10-01; text appended to the snapshot)"
    },
    "librepath-licence-page-tcga-bracs": {
      "tier": "T3",
      "tier_label": "Libre Pathology licence page (record only)",
      "journal": null,
      "year": null,
      "article_type": null,
      "legitimacy": "Licence evidence page for Libre Pathology; no passage cites it; kept so the NC-SA wording is traceable.",
      "license": "CC BY-NC-SA 3.0 (Copyrights page says NC SA 3.0)"
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