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SEER Inquiry System - Report
Produced: 11/26/2024 9:20 PM
Question 20021189
Inquiry Details
References:
#1: ICD-O-3
#2: Sngl vs Sbsq Prim Lymph & Hem. 2/28/2001
Question:
Multiple Primaries--Lymphoma: How many primaries should be reported when a 5/99 diagnosis of stage III follicular large cell lymphoma [9698/3] of the conjunctiva [C69.0] is followed with a 6/01 diagnosis of small cleaved lymphoma [9591/3] of the breast [C50.9]? See discussion.
Discussion:
The Lymphatic and Hematopoietic Diseases folding table states that this should be one primary, but is this true when they are both extralymphatic in origin?
Answer:
For cases diagnosed prior to 1/1/2010:Report as two primaries if that reflects the medical opinion for this case. The table is a guide, but does not overrule the clinician's opinion. These extranodal lymphomas are diagnosed in two different sites more than 2 months apart. They are listed as the same primary in the folding table because 9591/3 is generally a non-specific term and 9698/3 is a more specific cell type. If both histologies were diagnosed in the same organ or tissue, this is the same primary. However, the primary sites in this example are distinctly different.
For cases diagnosed 2010 forward, refer to the Hematopoietic and Lymphoid Neoplasm Case Reportability and Coding Manual and the Hematopoietic Database (Hematopoietic DB) provided by SEER on its website to research your question. If those resources do not adequately address your issue, submit a new question to SINQ.
