Bezoar-induced small bowel obstruction: Clinical characteristics and diagnostic value of multi-slice spiral computed tomography

Table 3 Computed tomography findings of impaction bezoars

Signs		Case	Percentage
Impaction bezoars		35
Well delineated mass in the intestinal lumen, with a mixed density and containing air	With encapsulating wall	6	17.1
	Without encapsulating wall	29	82.9
Bowel and perienteric changes
Bowel wall thickening	Obstruction and proximal	34	97.1
	With distal to the obstruction	11	31.4
Lumen dilatation proximal to the obstruction		34	97.1
Intestinal infarction		0	0
Mesenteric haziness		32	91.4
Ascites		13	37.1
CTA changes		17
Mesenteric vascular engorgement	Obstruction and proximal	17	100
	With distal to the obstruction	7	41.2