Follicular lymphoma is the most common form of indolent NHL in the US. It arises from germinal center B cells and is strongly associated with a translocation involving BCL2, which leads to overexpression of the BCL2 protein and promotes cell survival. Most follicular lymphomas show involvement of the bone marrow, spleen, and liver. Diffuse large B-cell lymphoma is the most common form of aggressive NHL, typically presenting as a rapidly enlarging mass, often with extranodal involvement. Burkitt lymphoma is very aggressive and divided into African, sporadic, and HIV-associated subtypes linked to c-myc translocations. Multiple myeloma is a neoplasm of plasma cells commonly involving