An official website of the United States government
Home
SEER Inquiry System - Report
Produced: 02/15/2026 7:49 AM
Question 20061050
Inquiry Details
References:
2004 SEER Manual, 192
Question:
Neoadjuvant Treatment/Date Therapy Initiated--Breast: If Tamoxifen has been used since 2000 for the treatment of hyperplasia, should it be coded as neoadjuvant treatment for a 2004 diagnosis of breast cancer?
Discussion:
Answer:
Do not code tamoxifen given for hyperplasia as treatment for breast cancer. In this case, tamoxifen started four years before the breast cancer diagnosis -- not treatment for breast cancer.
Cancer Site Category:
Breast
Data Item Category:
Date therapy initiated
Other Category:
Neoadjuvant treatment
Year:
2006
