Multiple lymphomatous polyposis and the role of fine needle aspiration cytology.

Multiple lymphomatous polyposis is an uncommon but distinctive form of gastrointestinal lymphoma. Clinical symptoms may closely resemble those of colorectal carcinoma and diagnostic confusion may result. The condition has a characteristic pathological appearance and immunophenotype which is important in allowing distinction from other less aggressive forms of gastrointestinal lymphoma. We report a case of this unusual condition in which the diagnosis was aided by fine needle aspiration cytology.