SEER Inquiry System - Search

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--Testis: Can a definition for "teratoma with somatic-type malignancy" (9084) be added to the Other Sites Solid Tumor Rules? See Discussion.

Solid Tumor Rules/Histology--Other Sites: Should an additional Note be added to Other Sites Solid Tumor Rules, Rule H12, to indicate that if the diagnosis is an NOS histology in a polyp, continue on through the rules or should Other Sites Rule H13 be moved ahead of Rule H12 to capture this specific histology? See Discussion.

Solid Tumor Rules/Histology--Other Sites: Other Sites Table 2 (Mixed and Combination Codes) requires site designations; can sites be added? See Discussion.

Solid Tumor Rules/Histology--Prostate: Other Sites Solid Tumor RulesTable 3 (Prostate Histologies), Note 1 in the Adenocarcinoma with neuroendocrine differentiation (8574/3) row, conflicts with Note 2 and requires further clarification. 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.

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.

Histology--Brain and CNS: Provide clarification about the priority order of histology coding sources and an explanation of why the annotated histology lists are not the same as the WHO IARC ICD-O-3.2 Excel Table (adopted 1/1/2021). See Discussion.

Primary Site/Histology--Heme & Lymphoid Neoplasms: What are the correct primary site and histology for patient diagnosed with an oropharyngeal soft tissue mass revealing plasma cell neoplasm with 5-10% of marrow cellularity in 2022? See Discussion.

SEER Manual/Mets at Diagnosis--Lung: Would calvarium lesions invading the brain be both brain and bone metastasis or only bone metastasis? See Discussion.