SEER Inquiry System - Question 20110154 Details

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Question 20110154

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Inquiry Details

References:

2011 SEER Manual

Question:

Behavior--Breast: Is a breast biopsy diagnosis of "ductal carcinoma in situ with focal and very early stromal invasion" an invasive tumor with a behavior code 3?

Discussion:

Answer:

Code the behavior to /3 [malignant, invasive].

"Stromal invasion" means the cancer is invasive. "Stroma" is the supporting connective tissue around and between ducts. It is outside the duct basement membrane. If the tumor cells extend into the stroma, the proper behavior designation for the tumor is invasive.

Cancer Site Category:

Breast

Data Item Category:

Behavior

Other Category:

N/A

Year:

2011