Answer:

Explanation

1. Amyloidosis affects most of all the descendens and rectosigmoid colon. (When the colon is affected, the descending and rectosigmoid colon are mostly involved.)

2. Colitis and amyloidosis cannot be distinguished by CT. (CT scan cannot reliably differentiate amyloid infestation from other causes of ischemic colitis or inflammatory bowel disease.)

3. Pseudotumoral formations are frequent in small bowel amyloidosis. (Other findings are jejunalization of the ileum, impaired motor activity, small polypoid protrusions, fine granular densities, and amyloid tumors.)

4. Thickened nodular mucosal folds are secondary to submucosal amyloid. (Barium enema shows luminal narrowing, loss of colonic haustrations, thickened mucosal folds, and a nodular mucosal pattern.)

5. Histopathology is of great importance in the diagnosis of amyloidosis. (The diagnosis of amyloidosis must be supported by histopathological examination as it has no pathognomic radiologic picture.)