<unk>  is a rare type of lymphoma that involves mature B cells. Older names include lymphoma simulating hairy cell leukemia and lymphoplasmacytic lymphoma with circulating<unk><unk> . The characteristic<unk><unk>  will appear in a blood smear of the peripheral blood of patients with this type of lymphoma. These<unk>  will have an oval nucleus with the “cobblestone” pattern of nuclear chromatin typical of more mature lymphoid cells. The cytoplasmic projections, or villi, are found in a polar distribution. Whether this condition is identical to splenic marginal zone lymphoma, or only highly similar, is a matter of debate.
Splenic lymphoma with villous lymphocytes
Diffuse large B-cell lymphoma associated with chronic inflammation
Hepatosplenic T-cell lymphoma
Lymphoid neoplasms with plasmablastic differentiation
Splenic marginal zone lymphoma
Monomorphic epitheliotropic intestinal T cell lymphoma
Duodenal-type follicular lymphoma
Large B-cell lymphoma arising in HHV8-associated multicentric Castleman's disease