SEER Inquiry System - Question 20081134 Details

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Question 20081134

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References:

2007 SEER Manual, C-696. Appendix C

Question:

MP/H Rules--Breast: For tubulolobular carcinoma, do we use 8522? See Discussion.

Discussion:

Path comment: This mixed variant of ductal and lobular carcinoma has been called in the past tubulolobular carcinoma, however, more recently is a mixed pattern of ductal and lobular carcinoma and not a variant of lobular carcinoma.

Answer:

For cases diagnosed 2007 or later, use rule H18 and assign code 8524 [lobular mixed with other types of carcinoma]. According to the MP/H rules, tubular is not a specific type of duct or lobular. This is based on the latest WHO classification of breast tumors.

The combination histology of tubular and lobular will be reviewed during the upcoming revision of the MP/H rules.

Cancer Site Category:

Breast

Data Item Category:

N/A

Other Category:

N/A

Year:

2008