Immunoproliferative small intestinal disease with duodenojejunal lymphoma: radiologic changes.

The radiologic changes in 1090 cases of lymphoma of the small bowel were analyzed and correlated with the pathologic findings. The material was collected in Iran, a high incidence area for immunoproliferative small bowel disease (IPSID). Of 100 cases of primary intestinal lymphoma associated with IPSID, 48 involved the duodenum and upper jejunum. They were associated with a characteristic spruelike radiologic pattern of the nonlymphomatous segments of the gut, the intensity of which decreased distally. However, the radiologic features of the lymphoma associated with IPSID were identical with those described in other forms of primary small intestinal lymphoma, regardless of histologic type or the presence and absence of alpha-heavy chain secretion.