Colonic tubular duplication combined with congenital megacolon: A case report

Figure 1 Abdominal computed tomography showed significant dilatation of the colonic lumen, dominated by dilatation of the transverse and descending colons, with more contents and adjacent tissue structures under colonic compression. A: Coronal view; B and C: Axial view.

Figure 2 Colonoscopy images show a large amount of fecal residue in the intestinal lumen, which was dilated (dominated by the dilation of the ascending colon, hepatic region, and transverse colon), and a smooth mucosa. No obvious structural abnormalities were found. A: Ileocecum; B: Ascending colon proximal to the liver; C: Transverse colon proximal to the liver; D: Descending colon; E: Sigmoid colon; F: Rectum.

Figure 3 Laparoscopic examination revealed that the malformed colon and the native colon received joint nourishment from the middle colic artery. TC: Transverse colon; DS: Duplication segment.

Figure 4 Duplicated colonic segment and native colon. A: Intraoperative view: An intimate anatomical relationship between the duplicated colonic segment and native colon; B: Resected colon.

Figure 5 Histopathological analysis of the resected specimen. Haematoxylin and eosin staining. A: “1” represents pigmentophage proliferation and “2” represents lymphocytes (blue); B: “3” represents colonic gland and “4” represents lymphoid follicle.