SEER Inquiry System - Question 20000430 Details

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Produced: 02/03/2026 2:10 PM

Question 20000430

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Inquiry Details

References:

SEER EOD-88, 3rd Ed, 3

Question:

Histology (Pre-2007)--Colon: What code is used to represent histology when the surgeon describes a sessile polyp and the final path diagnosis is stated as: "Rectal sessile polyp: Invasive moderately differentiated adenocarcinoma" (pathologist does not state that it is "arising in a sessile polyp")?

Discussion:

Answer:

For tumors diagnosed prior to 2007:

Code the Histology field to 8210/3 [adenocarcinoma arising in a polyp]. The structure in which this adenocarcinoma is arising, is a polyp.

For tumors diagnosed 2007 or later, refer to the MP/H rules. If there are still questions about how this type of tumor should be coded, submit a new question to SINQ and include the difficulties you are encountering in applying the MP/H rules.

Cancer Site Category:

Colon

Data Item Category:

Histology

Other Category:

N/A

Year:

2000