SEER Inquiry System - View

Question: 20130086 Status
Final

References
Source 1:   Heme & Lymph Neo Manual & DB
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Notes:  
Source 2:  
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Notes:  


Question
Multiple primaries--Heme & Lymphoid Neoplasms: I am confused about Chronic & Acute as it relates to Rules M8-13, and the Database that states particular histologies have Chronic, Accelerated & Blast phases but the histology doesn't change. Does this mean Rules M8-13 don't apply because there isn't a transformation / a change in histology? See discussion.

Discussion
Please clarify by stepping through the Database & Manual Modules to determine number of primaries.

Specific example:

01/2008 Chronic myeloid leukemia, Chronic phase - CR after TX 03/2010 CML, Accelerated Phase - CR after TX 02/2012 CML, Blast Crisis

Answer
Assign 9863 for CML in 2008. The 2010 diagnosis is the same histology. Per the Hematopoietic database, chronic and accelerated phase are alternate names. This is the same primary per Rule M2.

Blast phase (crisis) is also an alternate name for CML, which makes the 2012 diagnosis the same primary per Rule M2.

As you noted, not all histologies have transformations. If a transformation is not listed, rules M8-M13 do not apply. For these types of cases, use M15 and use the multiple primaries calculator.

History


Last Updated
02/24/2014

Date Finalized
07/19/2013