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Table 2 Hinchey classification and modified Hinchey classification by Sher et al.

From: Sigmoid diverticulitis: US findings

Hinchey classification

Modified Hinchey classification by Sher et al

I pericolic abscess or phlegmon

I pericolic abscess

II pelvic, intrabdominal or retroperitoneal abscess

IIa distant abscess amendable to percutaneous drainage


IIb Complex absess associated with fistula

III Generalized purulent peritonitis

III Generalized purulent peritonitis

IV Generalized fecal peritonitis

IV Fecal peritonitis