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"Meckel scan" findings in an infant with ileocolic intussusception.

A 7-month-old male infant who presented with bleeding per rectum was evaluated and diagnosed to have ileocolic intussusception on ultrasonography. Despite ultrasonography-guided saline reduction, there was persistence of bleeding per rectum. He was given blood transfusion and referred for Tc-99m pertechnetate scan to rule out ectopic gastric mucosa. The scan was done as per the standard institution protocol and the images revealed a focus of progressively increasing tracer uptake in the right lower abdominal quadrant suggesting the presence of ectopic gastric mucosa. An exploratory laparotomy revealed ileocolic intussusception secondary to Meckel diverticulum acting as a pathologic lead point (PLP). A wedge resection of the intestinal wall containing the diverticulum with suture closure was performed. The presence of Meckel diverticulum and ectopic gastric mucosa was confirmed on subsequent histopathological examination of the specimen. The patient rapidly improved postoperatively and was discharged 9 days after surgery. Bleeding per rectum can be seen in both intussusception and in Meckel diverticulum with ectopic gastric mucosa. Intussusception originating from a Meckel diverticulum as PLP remains a diagnostic challenge because of the overlapping symptoms.The Meckel scan findings, in this case, avoided the further CT scan, angiography, and endoscopy for the diagnosis of the cause of symptoms, sparing not only the time but cost of investigations and unnecessary radiation exposure to the patient.