SEER Inquiry System - Home

Primary site--Breast: how is subsite coded for a breast cancer when it is described as central portion between 1-3:00 or central portion at 12:00?

First Course Treatment/Chemotherapy--Colon:  Is maintenance therapy coded as part of the first course of treatment or as part of subsequent course of treatment?

Histology--Brain and CNS:  What morphology code should be assigned to a low-grade glial/glioneuronal neoplasm? See Discussion.

Histology--Corpus uteri:  Is 8020/3 used for a predominantly dedifferentiated carcinoma with focal well-differentiated endometrioid adenocarcinoma diagnosed in 2018?  See Discussion.

Solid Tumor Rules/Multiple primaries--Brain and CNS: What M rule applies to a clinically diagnosed right-sided parietal meningioma undergoing active surveillance, followed by a left-sided frontal anaplastic oligodendroglioma? See Discussion.

Solid Tumor Rules (2018)/Multiple primaries--Breast: How many primaries are there and how is histology coded for a breast primary showing encapsulated papillary carcinoma and Paget disease of the nipple? See Discussion.

Solid Tumor Rules (2018)/Multiple primaries--Lung:  How many primaries are there and what M rules apply for multiple lung histologies in the left lower lobe (LLL) and right upper lobe (RUL) of the lungs?  See Discussion.

Solid Tumor Rules (2018)/Multiple primaries--Colon: Is a colorectal anastomotic site recurrence reportable, that is, a second primary, per Rule M7, third bullet, if there is no mention of mucosa but the tumor is seen on colonoscopy? See Discussion.

Reportability/Histology--Thymus: Is a thymoma a malignancy if described as having separate tumor nodules within peri-thymic adipose tissue? See Discussion.

Reportability/Heme & Lymphoid Neoplasms--Skin:  Is elephantiasis nostras verrucosa (ENV) reportable as a lymphoma?  See Discussion.