Histology--Heme & Lymphoid Neoplasms: How is the histology coded for a "cutaneous diffuse large B-cell lymphoma, leg type" that has been verified as a valid diagnosis with prognostic factors including age and number of lesions on the legs?
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.
Primary site--Heme & Lymphoid Neoplasms: How is the primary site coded for plasma cell myeloma with radiologic evidence of multiple lytic lesions? See Discussion.
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.
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.
Primary site--CLL/SLL: How is the primary site coded and what rule applies when no bone marrow biopsy is performed on a patient diagnosed with chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL) which was based on the results of an axillary biopsy, positive peripheral blood and a CT scan showing multiple lymph nodes involved above and below the diaphragm? See Discussion
MP/H Rules/Histology--Bladder: How many primaries are accessioned and what rule applies when the patient has a mixed tumor with a urothelial carcinoma, NOS and a more specific histologic type followed by a diagnosis of urothelial carcinoma? See Discussion.