SEER Inquiry System - Home

Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned when a patient is simultaneously diagnosed with systemic mastocytosis and chronic myelomonocytic leukemia (CMML-0) on a single bone marrow biopsy? See Discussion.
 

Solid Tumor Rules (2018)/Multiple primaries--Lung: How are Primary Site and EOD Primary Tumor coded when a patient is diagnosed with four invasive tumors in the right lung that represent three separate primaries, but the not otherwise specified (NOS) tumor and one of the specific subtype/variants are in separate lobes? See Discussion.

 

Histology--Penis: What is the histology code of a glans penis primary with the final diagnosis squamous cell carcinoma, verrucous type? See Discussion.

Reportability/In situ--Prostate:  Has there been a change in reportability for prostatic intraepithelial neoplasia (PIN III) (C619)?  The 2018 SEER Manual notes: Collection stopped effective with cases diagnosed 01/01/2001 and later; however, on the casefinding list effective 10/01/2019, code D07.5, carcinoma in situ of prostate, is listed as reportable.

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.