SEER Inquiry System - Question 20031144 Details

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Question 20031144

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Inquiry Details

References:

#1: Coding Complex Morph Dx's, 3. August 2002 Revision

#2: 2004 SEER Manual, 86

Question:

Histology (Pre-2007)--Breast: What code is used to represent the histology "Ductal carcinoma in situ; 6 mm focus of invasion is a pure mucinous carcinoma that appears to have arisen in the background of encysted papillary carcinoma."

Discussion:

Answer:

Code to mucinous (8480) since that is the only clearly invasive component of this diagnosis.

According to our pathologist consultant, "Encysted papillary carcinoma is the same thing as intracystic papillry carcinoma, which I think of as an intraductal papillary carcinoma which has greatly expanded the duct to form a cyst-like structure. It generally behaves in an in-situ rather than an invasive fashion. The only clearly invasive component is the mucinous carcinoma, which is what I would code."

Cancer Site Category:

Breast

Data Item Category:

Histology

Other Category:

N/A

Year:

2003