Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are to be abstracted for a bone marrow biopsy diagnosis of "acute myeloid leukemia (non-M3 type; favor FAB M1), probably arising in myelodysplastic syndrome;" and flow cytometry studies performed the same day were consistent with acute myeloid leukemia?
Diagnostic confirmation--Heme & Lymphoid Neoplasms: How do we code diagnostic confirmation if the pathology report states the diagnosis of a skin biopsy is "low-grade B cell lymphoma, most compatible with marginal zone lymphoma," genetic data includes positive rearrangement for immunoglobulin heavy chain gene favor a diagnosis of "B cell lymphoma," and the physician's clinical diagnosis is "cutaneous marginal zone lymphoma"?
Histology--Heme & Lymphoid Neoplasms: How is histology coded for a pathologic diagnosis of "B-cell lymphoma, unclassifiable, with features intermediate between DLBCL and Burkitt lymphoma" that was clinically referred to as a "double hit lymphoma"?
Histology--Heme & Lymphoid Neoplasms: How is histology to be coded for acute lymphoblastic leukemia (ALL) and/or precursor B acute lymphoblastic leukemia (Pre-B ALL) for cases diagnosed 2010 and later? The Heme Database has two histology codes for this disease, both 9811/3 and 9836/3, which is the correct histology code?
Histology/Diagnostic confirmation--Heme & Lymphoid Neoplasms: How are histology and diagnostic confirmation coded when a patient has a clinical diagnosis of lymphoma but a pathologic diagnosis of malignant neoplasm, NOS? See Discussion.
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are to be abstracted when a lymph node biopsy reveals "malignant lymphoma, peripheral T-cell type, with some features of angioimmunoblastic T-cell lymphoma and follicular T-cell lymphoma," the bone marrow biopsy was negative for involvement, and the oncologist states this patient has "peripheral T-cell lymphoma"? See Discussion.
Primary site/Histology--Heme & Lymphoid Neoplasms: How are these fields coded for a case with pathologic diagnosis of "anaplastic large cell lymphoma, ALK-negative" involving the brain and a clinical statement of involvement in the right inguinal lymph nodes and the right lower extremity by a cutaneous lymphoma? See Discussion.
Histology--Heme & Lymphoid Neoplasms: How is this field coded for a case described as follicular lymphoma, grade 3a/3 [9698/3], with focal areas of diffuse large B cell lymphoma [9680/3] (approximately 10%)? Does the term "focal" have the same significance in Heme cases as it does for solid tumors? See Discussion.
Primary site--Heme & Lymphoid Neoplasms: When only pathology reports are available, how should the primary site be coded when a both a bone marrow biopsy and colon biopsy demonstrate "mantle cell lymphoma"?
Reportability--Heme & Lymphoid Neoplasms: Is "myeloproliferative syndrome, NOS" synonymous with "myeloproliferative syndrome" and "myeloproliferative disease" and, therefore, reportable under the new hematopoietic rules?