SEER Inquiry System - Search

Solid Tumor Rules/Histology--Cutaneous Melanoma: How is histology coded for a 2023 diagnosis of “early lentiginous melanoma in situ” of the skin? See Discussion.

Solid Tumor Rules/Histology--Cervix: How is histology coded for a 2023 endocervical adenocarcinoma negative for high-risk human papilloma virus (HR-HPV) on Pap smear and strongly positive for p16 on biopsy?  See Discussion.

Solid Tumor Rules/Histology--Breast: What is histology code of a breast tumor with ductal carcinoma, lymphoepithelioma-like carcinoma type? See Discussion.

Solid Tumor Rules/Histology--Breast: Is ductal carcinoma in situ (DCIS), solid type coded as 8500/2 or 8230/2? See Discussion.

Solid Tumor Rules/Histology--Brain: How is histology coded for an anaplastic glioneuronal tumor, BRAF p.V600E mutant, WHO Grade III, diagnosed following a right temporal lobe resection in 2021?  See Discussion.

Solid Tumor Rules/Histology--Brain and CNS: What is the histology code for low grade glioma? See Discussion.

Solid Tumor Rules/Histology--Brain and CNS: What is the histology code for angiocentric glioma? See Discussion.

Solid Tumor Rules/Histology--Brain and CNS: Should the term “diffuse” be added to Note 2 in the Non-Malignant Central Nervous System (CNS) Solid Tumor Rules, Table 6: Specific Histologies, NOS, and Subtypes/Variants, for the papillary glioneuronal tumor 9509/1? See Discussion.

Solid Tumor Rules/Histology--Bladder: How is histology coded for a bladder tumor when the diagnosis is 95% large cell neuroendocrine carcinoma and 5% high grade urothelial carcinoma of no special type? 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.