Colonic intestinal duplications are infrequent and rarely present past early childhood. We present the case of a large. ascending colon duplication in a 17-year-old boy resected using minimally invasive techniques. This appears to be the first reported case of a laparoscopic en-bloc ascending colon duplication resection in an adolescent. https://www.roneverhart.com/Mapale-40006-Dress-Color-Black/