Jejunoileal intussusception diagnosed by ultrasound

The "hay-fork" sign in the ultrasonographic diagnosis of intussusception

Ultrasonography was used to evaluate a palpable abdominal mass in a woman. The characteristic "hay-fork" image led to the correct diagnosis of colocolic intussusception, which had not been suspected. This sign appears to be highly specific for intussusception.

Intussesception after jejunoileal bypass as diagnosed by ultrasound

Eighty patients who had undergone jejunoileal bypass for morbid obesity were examined by ultrasound at their routine follow-up visits to the clinic. Ultrasonographic evidence of intestinal intussusception was found in 15 patients (19%). Two of these patients were asymptomatic. Ultrasonographic findings were confirmed by operation in 6 patients (5 with intussusception, 1 negative).