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| Question: 20120058 |
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Status Final References Source 1: 2012 Heme & Lymph Manual & DB pgs: Notes: Source 2: pgs: Notes: Question Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are to be abstracted when the patient is diagnosed with an acute neoplasm (DLBCL) per a pathology report and is subsequently diagnosed clinically with a chronic neoplasm (CLL/SLL) less than 21 days later? See discussion. Discussion The patient was diagnosed with an extranodal diffuse large B-Cell lymphoma and a bone marrow biopsy performed 16 days later showed no DLBCL, but demonstrated an abnormal CD5-positive B-cell population that was subsequently referred to as a CLL/SLL by a physician. The peripheral blood was negative and showed only moderate thrombocytopenia.
Does rule M9 apply for this case which indicates this is a single primary (DLBCL) because there was only one pathology specimen (a stomach biopsy) proving DLBCL and the bone marrow did not definitively identify CLL/SLL?
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