Retrograde Pylorogastric Intussusception-Case Report and Literature Review.

A 6-month-old male presented with an acute onset of emesis and feeding intolerance. Abdominal ultrasound revealed a mass in the distal stomach immediately adjacent to the balloon of a gastrostomy button. Upper gastrointestinal (GI) series demonstrated persistence of the mass obstructing the pylorus even after deflation of the gastrostomy balloon with failure of contrast to empty from the stomach.