The findings in asymptomatic control group included 2 cases of ileal polyp (2.50%), 2 cases of angiodysplasia (2.50%), 1 case of intestinal erosion (1.25%), and 1 case of jejunal ulcer (1.25%).

• 无消化道症状的体检者中发现：回肠息肉2例(2.；50%25)，小肠血管畸形2例(2