Welcome to the SEER Inquiry System (SINQ). SINQ is a collection of questions that cancer registrars have had while coding cancer cases. Click Search to look for specific questions or to select questions for a Report.

Recent Questions
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Solid Tumor Rules (2018)--Breast: How many primaries are accessioned when a prophylactic mastectomy reveals a final diagnosis of invasive tubular carcinoma, but the College of American Pathologists (CAP) Protocol includes ductal carcinoma in situ (DCIS) sized separately and it is not clear if these are different tumors? See Discussion.

Final Jun 20 2018

Date of diagnosis: The 2018 SEER Manual confirms the date of a suspicious cytology may be used to code the date of diagnosis when there is a subsequent definitive biopsy. Does this new instruction apply if the definitive biopsy or resection is performed 6 months following the suspicious cytology? See Discussion.


Final Jun 08 2018

Primary site--Colon:  What is the correct topography code for appendiceal orifice?  See Discussion.

Final Jun 05 2018

Reportability/Behavior: Is myxoinflammatory fibroblastic sarcoma (MIFS) reportable for 2018?  This histology is on the 2018 ICD-O-3 histology update list with a behavior code of /1. See discussion.

Final Jun 01 2018

Reportability/Histology: Is a focal high grade squamous intraepithelial lesion (HSIL/moderate to severe dysplasia/VIN II-III) in the vulva reportable for cases diagnosed in 2018? See discussion.


Final Jun 01 2018

Solid Tumor Rules (2018)/Histology--Corpus uteri:  What is the correct histology code for "Mesophrenic-like adenocarcinoma" of the corpus uteri?"  See Discussion.

Final May 21 2018

Reportability/Histology: Differentiated penile intraepithelial neoplasia and differentiated-type vulvar intraepithelial neoplasia are on the ICD-O-3 Histology update list for 2018 and they are stated to be Not reportable for 2018. However, SINQ 20160069 states that differentiated-type intraepithelial neoplasia, 8071/2 is reportable. Please clarify reportability for the two terms in the 2018 ICD-O-3 histology update. In addition, is differentiated intraepithelial neoplasia non-reportable for all sites?

Final May 07 2018

Marital Status: Is Marital Status always a self-reported status?  See Discussion.


Final May 02 2018

MP/H Rules/Histology--Brain and CNS: How should histology be coded for the following 2017 cases (pituitary adenoma vs. prolactinoma)? See Discussion.


Final Apr 27 2018

Primary site--Pancreas: Is the uncinate process of the pancreas coded to C259, C250, or C257?

Final Mar 30 2018
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