Retrograde intussusception and Giant Meckel’s diverticulum: a rare occurrence in Waugh’s syndrome

Intussusception is defined as telescoping of proximal bowel segment into immediately adjacent distal bowel segment. Thorek and Lorrimer broadly classified intussusception into ante grade and retrograde variants (Table 1).1 Retrograde/ anti peristaltic/ reverse intussusception (RINT) is defined as “anti peristaltic telescoping of distal bowel into proximal bowel.1,2 Usually RINT occurs in patients with Roux-en-Y gastric bypass, long intestinal tubes, metastatic bowel malignancy, and Achalasia Cardia etc.1−7 Here, we describe a case of ileo-ileal RINT predisposed by a giant Meckel’s diverticulum (MD) in a patient with Waugh’s syndrome..