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SEER Inquiry System - Report
Produced: 11/10/2026 8:58 AM
Question 20130040
Inquiry Details
References:
#1: ICD-O-2
#2: Heme & Lymph Manual & DB
Question:
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned and what rule applies when a patient has a history of chronic myeloid leukemia diagnosed in 1993 followed by a diagnosis of acute myeloid leukemia arising in chronic myelogenous leukemia, blast phase? See Discussion.
Discussion:
12/1993 Bone marrow biopsy: Chronic myeloid leukemia t(9;22) (q34;q11).
09/2011 Bone marrow biopsy: Abnormal cytogenetic & FISH support persistent involvement by chronic myelogenous leukemia.
12/2011 Peripheral blood, flow cytometry: Involvement by acute myeloid leukemia arising in chronic myelogenous leukemia (CML, blast phase, 30% blasts by manual diff.).
Is the 12/2011 diagnosis a new primary? If not, why don't Rules M8-M13 apply when the Heme DB Abstractor Notes section for CML indicates that when there is a chronic, accelerated and blast phase that develops later in the course of the disease, change the histology code to the more specific diagnosis?
Answer:
For cases diagnosed 2010 and forward, access the Hematopoietic Database at http://seer.cancer.gov/seertools/hemelymph.
This case should be accessioned as a multiple primary: chronic myelogenous leukemia t(9;22) (q34;q11) [9863/3] diagnosed in 1993 and acute myeloid leukemia [9861/3] diagnosed in 2011 per Rule M15.
Use the diagnosis date to determine the appropriate manual and rules to follow to determine the histologies for this case. To determine the histology of the 1993 diagnosis, use the ICD-O-2. The Heme Manual & DB will be used to determine the number of primaries and the histology of the 2011 diagnosis of AML.
Rules M8-M13 in the Heme Manual cannot be applied to this case because no transformation occurred. CML does not transform to another neoplasm.
SEER*Educate provides training on how to use the Heme Manual and DB. If you are unsure how to arrive at the answer in this SINQ question, refer to SEER*Educate to practice coding hematopoietic and lymphoid neoplasms. Review the step-by-step instructions provided for each case scenario to learn how to use the application and manual to arrive at the answer provided. https://educate.fhcrc.org/LandingPage.aspx.
History:
This is a new primary for the Acute Myeloid Leukemia.
Based on the genetic information provided for the 1993 diagnosis, you have a 9875/3 for the first diagonsis, which is the same diagnosis that is found in the September 2011 report.
No transformations are listed for 9875/3.
Follow Rule M15 and use the multiple primaries calculator, which states this is a new primary.
