Yibeltal Wubale ADAMU, Shibabaw Tedila TİRUNEH, Abebe Ayalew BEKEL, Dawit Habte WOLDEYES

An abnormally positioned and morphologically variant sigmoid colon: case report

The sigmoid colon is about 40 cm in length and begins below the pelvic inlet and ends at the rectosigmoid junction. It normallylies in the lesser pelvis. Anatomical variations of the sigmoid colon were described by various authors. The length andform of sigmoid colon are the most variable of all colonic segments. In this case, the sigmoid colon was found covering theleft half of the transverse colon, hiding the spleen and in contact with the left lobe of the liver. In addition, it had no visibletaeniae coli and sacculations. The sigmoid colon was 66 cm in length, 7 cm in lumen width, and in suprapelvic position.Awareness of the possible variation of colon especially of the sigmoid is necessary for adequate clinical, surgical and radiologicalmanagement.

Keywords:

length; morphology; position; sigmoid colon; variation,

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1. Syamala G, Prasad K. Anatomical study of sigmoid colon. IOSR Journal of Dental and Medical Sciences 2016;15:26–30.
2. Nayak SB, Pamidi N, Shetty SD, Sirasanagandla R, Ravindra SS, Guru A, Kumar N. Displaced sigmoid and descending colons: a case report. OA Case Reports 2013;2:166.
3. Michael SA, Rabi S. Morphology of sigmoid colon in South Indian population: a cadaveric study. J Clin Diagn Res 2015;9:AC04– 7.
4. Standring S. Gray’s Anatomy: the anatomical basis of clinical practice. 40th ed. London (UK): Churchill Livingstone Elsevier; 2008. p. 1147–8.
5. Atamanalp SS, Öztürk G, Ayd›nl› B, Ören D. The relationship of the anatomical dimensions of the sigmoid colon with sigmoid volvulus. Turk J Med Sci 2011;41:377–82.
6. Madiba TE, Haffajee MR, Sikhosana MH. Radiological anatomy of the sigmoid colon. Surg Radiol Anat 2008;30:409–15.
7. Akinkuotu A, Samuel JC, Msiska N, Mvula C, Charles AG. The role of the anatomy of the sigmoid colon in developing sigmoid volvulus: a case-control study. Clin Anat 2011;24:634–7.
8. Romanes GJ. Cunningham’s manual of practical anatomy: the abdomen. New York (NY): Oxford Medical Publications; 2010. p. 175–86.
9. Madiba TE, Haffajee MR. Sigmoid colon morphology in the population groups of Durban, South Africa, with special reference to sigmoid volvulus. Clin Anat 2011;24:441–53.
10. Sadahiro S, Ohmura T, Yamada Y, Saito T, Taki Y. Analysis of length and surface area of each segment of the large intestine according to age, sex and physique. Surg Radiol Anat 1992;14:251–7.
11. Bhatnagar BN, Sharma CL, Gupta SN, Mathur MM, Reddy DC. Study on the anatomical dimensions of the human sigmoid colon. Clin Anat 2004;17: 236–43.
12. Hadar H, Gadoth N. Positional relations of colon and kidney determined by perirenal fat. AJR Am J Roentgenol 1984;143:773–6.
13. Schoenwolf GC, Bleyl SB, Brauer PR, Francis-West PH. Larsen’s human embryology. 4th ed. Philadelphia (PA): Churchill Livingstone Elsevier; 2009. p. 456.