Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned when a plasmacytoma of the intervertebral disc is diagnosed in 2010 followed by a diagnosis of immature plasma cell myeloma by a right hip biopsy in 2011? See Discussion.
Reportability--Heme & Lymphoid Neoplasms: Is a peripheral blood finding consistent with involvement by monoclonal, lambda-restricted mature B cell population with co-expression of CD5 and CD23 reportable if, immunophenotypically, the case is consistent with a chronic lymphocytic leukemia/small lymphocytic lymphoma? See Discussion.
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned when a patient was treated in 1999 with Vidaza for myelodysplastic syndrome and had a recent biopsy that demonstrated a transformation to acute myeloid leukemia?
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned and what rule applies when a subsequent diagnosis of diffuse large B-cell lymphoma (95%) and follicular lymphoma, grade 3 (5%) is made following an original diagnosis of low grade CD-10 positive B-cell lymphoma, most consistent with low grade follicular lymphoma (FL) ? See Discussion.
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned, and what is the year of diagnosis, when the patient was initially diagnosed with poorly differentiated, diffuse lymphocytic lymphoma, small cleaved cell [9591/3] in 1991, followed by multiple recurrences and transformations? See Discussion.
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are to be abstracted when a patient is diagnosed with NHL, large B-cell lymphoma in 3/2010 followed by a "recurrence of previously diagnosed" NHL per a 12/2010 liver biopsy? See Discussion.
Multiple primaries--Heme & Lymphoid Neoplasms: How are the terms "chronic" and "acute" used to help determine the number of primaries to be abstracted and what rule applies when a diagnosis of diffuse large B-cell lymphoma is followed two years later by a diagnosis of follicular lymphoma, grade 3A of 3? See Discussion.
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned if a 2010 diagnosis of a preleukemic condition is subsequently diagnosed in 2012 with a specific leukemia that is not listed as a transformation? See Discussion.
Reportability--Heme & Lymphoid Neoplasms: Is the pathologic final diagnosis of "follicular lymphoma, WHO grade 1-2, findings may represent in situ follicular lymphoma" reportable if the clinician also states this may be an "in situ follicular lymphoma"? See Discussion.
Histology--Heme & Lymphoid Neoplasms: How is histology coded for a patient diagnosed with diffuse large B-cell lymphoma, immunoblastic [9684/3] in 2009 and a recurrence in 2010 at another facility was referred to as plasmablastic lymphoma [9735/3]? See Discussion.