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Fig. 1. 56-year-old woman admitted for first episode of acute
diverticulitis. Transverse CT scan shows concentric wall thickening
(arrow) of descending colon. Area of adjacent fatty infiltration
(arrowheads) measured 90 cm2 and was seen on 6-cm
craniocaudal extension, for total volume of 540 cm3. Patient
underwent 10 days of IV antibiotic treatment and was discharged home free of
symptoms. Patient relapsed 2 months later; she was readmitted to hospital for
new antibiotic treatment and scheduled for elective surgery.