Primary site--Heme & Lymphoid Neoplasms: How is the primary site coded for a diagnosis of Langerhans cell histiocytosis with extensive bony metastatic disease and lymphadenopathy? See Discussion.
Histology/Primary site--Heme & Lymphoid Neoplasms: How are the histology and primary site coded if a pleurocentesis is compatible with plasmablastic plasmacytoma/lymphoma when no further information is available?
Histology--Heme & Lymphoid Neoplasms: How is histology coded when the biopsy final diagnosis is "low grade B-cell lymphoma of unclear subtype (splenic marginal zone lymphoma?)" and the hematologist clinically diagnoses this as splenic marginal zone lymphoma? See Discussion.
Histology--Heme & Lymphoid Neoplasms: How is the histology coded when the bone marrow biopsy shows acute myeloid leukemia, but the physician states this is therapy-related AML secondary to prior radiation treatment? See Discussion.
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned if a patient diagnosed and treated for multiple myeloma is subsequently diagnosed with multiple large plasmacytomas involving the scalp and thorax? See Discussion
Primary site--Heme & Lymphoid Neoplasms: How is the primary site coded for a diagnosis of post-transplant lymphoproliferative disorder (PTLD) diagnosed on an inguinal lymph node biopsy with CT scan evidence of lymphadenopathy in the chest, abdomen and pelvis if the bone marrow is also involved?
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned if a 2008 diagnosis of extralymphatic follicular lymphoma in the breast is subsequently diagnosed in 2011 with ocular follicular lymphoma? See Discussion.