SEER Inquiry System - Question 20130199 Details

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Produced: 10/31/2025 12:07 PM

Question 20130199

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Inquiry Details

References:

2007 MP/H Rules

Question:

MP/H Rules/Multiple primaries--Breast: Does breast Rule M10, 'Tumors that are lobular (8520) and intraductal or duct are a single primary" apply if you have two tumors in the same breast, one ductal and the other tubulolobular (8524) or are they separate primaries per Rule M12?

Discussion:

Answer:

Apply Rule M10 to this case. Tubulolobular is now classified as a variant of lobular. Code to lobular, NOS (8520) because Tubulolobular does not have a specific ICD-O-3 code.

Cancer Site Category:

Breast

Data Item Category:

N/A

Other Category:

Multiple primaries

Year:

2013