Radiographic appearance of mucosal dysplasia associated with XXXX .

@entity5 @entity1 @entity31 @entity1141
The radiographic appearance of @entity1141 , a precancerous histologic change that is frequently present in colitic colons at high risk for @entity5 , was analyzed. Over a 5-year period, 170 @entity1 with long-standing @entity31 participated in a @entity5 surveillance program at our institution. On entry, all @entity1 underwent radiography with a double-contrast barium enema and colonoscopy with multiple random biopsies. All radiographs were reviewed retrospectively and were correlated with the colonoscopic and histologic findings. @entity1141 , ranging from mild to severe, was found in the biopsy specimens from 26 (15%) of these @entity1 (in 59 different regions). Thirteen of the 26 @entity1 with @entity1141 had colectomies, and the specimens were available for review. Most @entity1141 is not radiographically visible, as was the case in 40 (68%) of the 59 regions found histologically to have @entity1141 . In the 19 regions in which @entity1141 was visible radiographically, it appeared as a solitary nodule or as several separate nodules in 11 (19%) of the 59 regions or as a close grouping of multiple adjacent nodules with apposed, flattened edges in 8 (14%) of the 59 regions. The radiographic finding of a nodule or of several separate nodules was not specific because these nodules were indistinguishable from the inflammatory nodules often present in colitic colons. On the other hand, the radiographic finding of a close grouping of adjacent nodules with apposed, flattened edges was associated with @entity1141 50% of the time. This radiographic appearance was seen in five of our 26 @entity1 who had @entity1141 . Our study shows that barium examinations are useful in some @entity1 with chronic @entity31 by suggesting the presence of @entity1141 and directing the endoscopist to specific locations for biopsy.
