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Table 1 Perforated sigmoid diverticulitis score

From: Position paper: management of perforated sigmoid diverticulitis

Stage CT scan findings
IA Phelogmon with no abscess
IB Phlegmon with abscess ≤ 4 cm
II Phlegmon with abscess > 4 cm
III Purulent pertonitis (no hole in colon)
IV Feculent pertonitis (persistent hole in colon)