Anat Cell Biol.  2020 Sep;53(3):372-375. 10.5115/acb.20.082.

Anomalous peritoneal band connecting greater omentum to the ascending colon: a possible cause for dilation of ascending colon

• Nayak SB
• Soumya K

• KMID: 2507651
• DOI: http://doi.org/10.5115/acb.20.082

Abstract

Anomalies of the peritoneum and the colon are quite common. Some of these anomalies can disturb the normal digestive and absorptive functions of the intestine and the others might result in formation of volvulus or impede the blood supply of the intestine. We report a rare, combined variation of peritoneum and ascending colon. In a 70-year-old male cadaver, the greater omentum was very small and extended only for about an inch below the transverse colon. From its lower end, a fibrous band extended to the right wall of the upper part of ascending colon. There was a deep constriction on the right wall of the ascending colon at the site of attachment of the fibrous band. The ascending colon was grossly dilated. Further, the ascending colon was mobile and presented a small ascending mesocolon along its left edge. We discuss the possible embryological basis and clinical and surgical relevance of the case.

Keyword

Peritoneum; Digestive system; Ascending colon; Peritoneum; Omentum

Figure

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  Fig. 1 Dissection of abdominal viscera showing the anomalous peritoneal band. AC, ascending colon; AMC, ascending mesocolon; AP, appendix; CE, cecum; GB, gall bladder; GO, greater omentum; I, inferior; IL, ileum; L, left; PB, peritoneal band; R, right; RLL, right lobe of liver; S, superior.

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  Fig. 2 Closer view of the anomalous peritoneal band. AC, ascending colon; CON1, constriction caused by the band; CON2, second constriction; GO, greater omentum; I, inferior; L, left; PB, peritoneal band; R, right; RCF, right colic flexure; RLL, right lobe of liver; S, superior.

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  Fig. 3 Showing the parietal peritoneum behind the ascending colon and cecum. The ascending colon has been pulled medially to show the parietal peritoneum behind it. The right paracolic gutter extended behind the ascending colon. AC, ascending colon; CE, cecum; CON1, constriction caused by the band; I, inferior; L, left; PP, parietal peritoneum; R, right; RIF, right iliac fossa; RLL, right lobe of liver; S, superior.

Reference

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