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SEER Inquiry System - Report
Produced: 10/17/2025 11:27 PM
Question 20091117
Inquiry Details
References:
#1: 2007 SEER Manual, C-611. Appendix C
#2: WHO Class Breast Tumors, 26. 2003
Question:
MP/H Rules/Histology--Breast: How is histology to be coded for a breast primary described as "tubular carcinoma (well differentiated invasive ductal carcinoma)"? See Discussion.
Discussion:
How are terms that are modified by parentheses to be interpreted? Do terms in parentheses modify the stated diagnosis and thus have priority over the stated diagnosis? Or would rule H17 apply and histology would be coded as duct and other carcinoma? For this case, the wording of the diagnosis and use of parentheses seem to indicate that tubular is a type of ductal carcinoma. Tubular is not listed as a specific duct carcinoma in the MP/H rules histology tables for breast.
Answer:
For cases diagnosed 2007 or later, code the histology as tubular carcinoma [8211/3]. This is not a case of tubular AND infiltrating duct. The histology is stated to be tubular. Tubular is not a specific type of duct carcinoma.
Cancer Site Category:
Breast
Data Item Category:
Histology
Other Category:
N/A
Year:
2009
