SEER Inquiry System - Report
Produced: 11/23/2024 12:25 PM
Question 20021023
Inquiry Details
References:
#1: Revised Breast EOD Codes. June 25, 2002
#2: SINQ 20010046
Question:
EOD-Size of Primary Tumor/EOD-Extension--Breast: How do you code extension when the tumor in the breast is in situ and the regional axillary lymph nodes are positive? See discussion.
Discussion:
For example, what extension code is used for a 4.5 cm DCIS (no invasive ca found in excisional biopsy or mastectomy specimen) with mets to 01/07 LNs?
Answer:
For cases diagnosed 1998-2003:
Code the EOD-Size of Primary Tumor field to 045 [4.5 cm]. Document how the size was determined in the EOD-Extension field.
Code the EOD-Extension field to 16 [Invasive and in situ components present, size of entire tumor coded in Tumor Size (size of invasive component not stated) AND proportions of in situ and invasive not known]. By virtue of the lymph node metastasis, this must be an invasive breast carcinoma. The size of the invasive component is unknown.