An official website of the United States government
Home
SEER Inquiry System - Report
Produced: 02/08/2026 11:29 PM
Question 20021193
Inquiry Details
References:
#1: SEER Program Code Man, 3rd Ed, 103
#2: 2004 SEER Manual, 94
Question:
Grade, Differentiation--Breast: Does SEER agree with our pathologist who contends that "by convention lobular carcinoma is considered to be grade 2"?
Discussion:
Answer:
No. SEER does not have a default grade code for lobular carcinoma. Code the grade as stated in the pathology report. If no grade is stated, code the Grade, Differentiation field to 9 [Cell type not determined, not stated or not applicable].
Cancer Site Category:
Breast
Data Item Category:
Histology
Other Category:
N/A
Year:
2002
