Obstructing Sigmoid Volvulus: An Unusual Complication in a Pediatric Patient With Ulcerative Colitis.

Acute colonic dilation in pediatric patients with ulcerative colitis (UC) raises a concern for toxic megacolon, but other rare conditions such as sigmoid volvulus may present in a similar manner. We report a rare case of a teenager with UC without prior surgery who developed an obstructing sigmoid volvulus managed with endoscopic detorsion and decompression. Colonic inflammation in patients with UC may result in a volvulus in the absence of other predisposing factors and should be considered in the differential diagnosis of patients with UC who present with obstructive symptoms with an atypical presentation.