Histology--Head & Neck: Why is 8070 not listed as a valid histology for ill-defined sites as squamous cell carcinoma arises in the head and neck sites. See Discussion.
Reportability/Histology--Tongue: Is high grade squamous dysplasia of the tongue reportable; and is it the same as carcinoma in situ (CIS), code 8077/2?
Reportability--Head & Neck: Are high-grade squamous dysplasia / “severe” squamous dysplasia or glandular intraepithelial neoplasia reportable for all Head & Neck subsites? If so, what year did they become reportable? In reviewing SINQ 20240003, 20230047, and 20230046, it appears that at least the larynx, mandible, and tongue have been reportable since 2021. However, 8077/2 and 8148/2 histology codes are not included in the Solid Tumor Rules (STRs) (2025 update) for Head and Neck, either in Tables 1-9 or the H Rules.
Update to the current manual/Reportability--Esophagus: Is high grade dysplasia of the esophagus reportable? The 2024 Seer Program Manual, page 21, has an example that states it is not reportable. See Discussion.
Solid Tumor Rules/Histology --Brain and CNS: Why is high grade astrocytoma with piloid features (HGAP) not grouped together with the other astrocytoma histologies as a subtype/variant of astrocytoma? See Discussion.
Multiple primaries--Heme & Lymphoid Neoplasms: Could you please clarify Note 2 found in Rule M10, which is " 'Transformations to' (acute neoplasms) and 'Transformations from' (chronic neoplasms) are defined for each applicable histology in the database." Do the neoplasms being considered have to contain the words 'chronic' and/or 'acute'?
Reportability--Brain and CNS: Are hemangioma, NOS (9120/0), cavernous hemangioma (9121/0) or venous hemangioma (9122/0) reportable when they arise in the brain or CNS?
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