colonic diverticulitis
perforation of diverticulum with intramural/localized paracolic abscess
- incidence: 20-25% of diverticular disease
- pneumoperitoneum rare
CT findings:
- inflammation of pericolonic fat (98%)
- diverticula (84%)
- bowel wall thickening of 4-12 mm (70%)
- abscess (47%)
- fluid +/- air of peritonitis (16%); fistula (14%); obstruction (12%);
intramural sinus tract (9%); ureteral obstruction (7%)
extraluminal contrast with BE:
- "double tracking": longitudinal sinus tract (Crohn disease:
longer segments of > 10 cm)
- abscess; fistula
see: diverticular disease of colon
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© 2002, C.E. Kahn, Jr.
2002-04-18