Presentation
Chronic constipation with acute onset of abdominal distension, nausea, and vomiting.
Patient Data
Age: 60 years
Gender: Male
From the case:
Sigmoid volvulus
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Distension of the sigmoid colon with smooth tapering of its ends forming a closed-loop obstruction with a "coffee bean appearance" on coronal images. Twisting of the sigmoid mesentery and vessels giving the "whirlpool sign". No free intraperitoneal fluid or signs of perforation. The remainder of the large and small bowel are not distended.
Small simple renal cysts are noted bilaterally.
Case Discussion
CT features of a sigmoid volvulus which was confirmed at surgery.
Sigmoid volvulus is the most common intestinal volvulus, seen in ~60% of cases and more common in elderly patients.
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