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SEER Inquiry System - Report
Produced: 11/08/2026 8:51 AM
Question 20170011
Inquiry Details
References:
#1: 2007 MP/H Rules
#2: 2016 SEER Manual
Question:
MP/H Rules/Multiple primaries--Breast: Can we accession two breast primaries when imaging is "suspicious for malignancy" on both breasts but only one biopsy is taken and is histologically confirmed, and assume bilateral complete response to neoadjuvant chemotherapy with bilateral mastectomies negative for residual cancer? See Discussion.
Discussion:
The patient is diagnosed by bilateral mammograms suspicious for malignancy in both breasts. A biopsy is done on one breast and is positive. The physician states that he will not biopsy the contralateral breast, as the patient has consented to bilateral mastectomy. The patient receives neoadjuvant chemo, follow by bilateral mastectomies. Both breasts are negative for residual cancer, stated as a complete response. Based on "suspicious for malignancy" can we accession two primaries and assume bilateral complete response?
Answer:
Accession two breast primaries, one right and one left, rule M7. "Suspicious" is reportable ambiguous terminology.
