High‐grade non‐Hodgkin's lymphoma complicating polypoid nodular lymphoid hyperplasia and multiple lymphomatous polyposis of the intestine

Abstract
Three patients with multiple lymphoid polyps of the small intestine—two with nodular lymphoid hyperplasia and one with multiple lymphomatous polyposis—developed high‐grade B‐cell lymphomas. A literature search has revealed only 10 previous cases of nodular lymphoid hyperplasia complicated by lymphoma and none of an association between multiple lymphomatous polyposis and high‐grade lymphoma.