SEER Inquiry System - Search

Solid Tumor Rules (2018)/Primary Site--Brain and CNS: Should the updated note for optic nerve glioma be included in both the 2018 Solid Tumor Rules for Malignant Central Nervous System (CNS) and Peripheral Nerves, Note 6, and the Non-Malignant CNS Tumors, Note 5? See Discussion.

Solid Tumor Rules (2018)/Primary Site--Head & Neck: The instructions for Table 9 of the Head and Neck Solid Tumor Rules instruct registrars to code the primary site to C479 (Autonomic nervous system) for paragangliomas that arise in the head and neck region, but the ICD-O-3.2 provides a site-associated code for most of these tumors (C754, Carotid body and C755, Paraganglion). Which primary site is correct? See Discussion.

Solid Tumor Rules (2018)/Recurrence--Breast: Does any recurrence within the multiple primaries-stated timeframe count, not those just in the primary site? See Discussion.

Solid Tumor Rules (2018, 2021)/Histology--Breast: How is histology coded for a diagnosis ofmixed mucinous carcinoma? See Discussion.

Solid Tumor Rules (2018, 2021)/Histology--Cervix:  For cases diagnosed 1/1/2022 and later, how is histology coded for the following three cervix cases relating to p16? See Discussion.

Solid Tumor Rules (2018, 2021)/Histology--Kidney: What is the correct histology code for a kidney primary described as clear cell papillary renal cell carcinoma"? Should we use H2 and code 8312/3 or H3 and code 8323/3?

Solid Tumor Rules (2018, 2021)/Histology--Melanoma: How is histology coded for an invasive melanoma with multiple subtype/variants? See Discussion.

Solid Tumor Rules (2018, 2021)/Histology--Melanoma: In what situation will Rule H4 be used to code the histology to regressing melanoma? See Discussion.

Solid Tumor Rules (2018, 2021)/Histology--Melanoma: In what situation will Rule H6 be used to code the histology to lentigo maligna melanoma? See Discussion.

Solid Tumor Rules (2018, 2021)/Multiple Primaries--Lung: How many primaries should be reported for a 4/2019 diagnosis of left upper lobe (LUL) adenosquamous carcinoma (left lingula mass biopsy: adenosquamous carcinoma; LUL lung biopsy: pulmonary adenocarcinoma, stated to be a collision tumor and single primary per the Tumor Board), treated with radiation followed by an enlarging LUL mass in 7/2020 found to be squamous cell carcinoma? See Discussion.