MP/H Rules/Multiple primaries--Breast: How many primaries are reported and what is the histology for each in a case of infiltrating duct and lobular carcinoma of the breast (8522) with Paget disease of the same breast?
Primary site--Heme & Lymphoid Neoplasms: What rule applies to code a primary site for a peripheral blood diagnosis of marginal zone lymphoma that has a positive flow cytometry/FISH analysis when no biopsies are performed, scans show no evidence of disease, exam indicates no lymph nodes are palpable and the physician's clinical diagnosis "marginal zone lymphoma, unspecified site, stage 1"? See Discussion.
Multiple primaries--Heme & Lymphoid Neoplasms: Is a new primary reported for the diagnosis of plasmacytoma associated with a pathological fracture if it follows a diagnosis five years ago of multiple myeloma? See Discussion.
Histology--Heme & Lymphoid Neoplasms: How is histology coded when a bone marrow shows slightly hypercellular marrow with acute myeloid leukemia, non-M3 type and the flow cytometry is also consistent with acute myeloid leukemia, non-M3 type?
Multiple primaries--Heme & Lymphoid Neoplasms: Is a new bone marrow diagnosis of acute myelogenous leukemia that follows a 2007 treated diagnosis of a JAK-2 positive polycythemia vera a new primary?
Primary site--Heme & Lymphoid Neoplasms: Does Rule PH27 apply meaning that primary site is coded to C809 or would it be more appropriate to code to C269 GI Tract NOS since all disease involves the GI tract and this is more specific?
Extranodal lymphoma first diagnosed in the stomach (fundus and antrum) which upon further investigation also involved the small bowel (MALT Lymphoma) in the absence of lymph node findings. MD staged this IIE. Initial thought was Gastric, but PET/CT indicated abnormal uptake involving loop of distended small bowel in the pelvis.
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are reported if a bone marrow shows low grade mature B cell lymphoma with IgM paraprotein - macroglobulinemia? See Discussion.
Reportability--Heme & Lymphoid Neoplasms: Is a case reportable in which the pathology report is negative for plasmacytoma but a subsequent physician's clinical diagnosis is plasmacytoma?
Primary site--Heme & Lymphoid Neoplasms: How do you code the primary site for a marginal zone lymphoma involving bilateral axillary lymph nodes and inguinal lymph nodes, bone marrow and bilateral orbits that the physician refers to as a bilateral orbital lymphoma, Stage IV? See Discussion.
Primary site--Heme & Lymphoid Neoplasms: Does Rule PH20 apply if a patient with lymphoma has bilateral axillary and bilateral inguinal lymph node involvement?
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