Table 2.

Modified Hinchey classification by Wasvary et al. and CT findings by Kaiser et al.

Modified Hinchey classification by Wasvary et al. [6]		CT findings by Kaiser et al. [20]
0	Mild clinical diverticulitis	Diverticuli ± colonic wall thickening
Ia	Confined pericolic inflammation or phlegmon	Colonic wall thickening with pericolic soft tissue changes
Ib	Pericolic or mesocolic abscess	Ia changes + pericolic or mesocolic abscess
II	Pelvic, distant intraabdominal, or retroperitoneal abscess	Ia changes + distant abscess (generally deep in the pelvis or interloop regions)
III	Generalized purulent peritonitis	Free gas associated with localized or generalized ascites and possible peritoneal wall thickening
IV	Generalized fecal peritonitis	Same findings as III