Related Experiment Videos
[A case of a right-sided sigmoid colon]
1Department of Anatomy, Chiba University School of Medicine, Japan.
Kaibogaku Zasshi. Journal of Anatomy
|December 1, 1991
Summary
A rare anatomical anomaly discovered in a cadaver revealed an excessively long colon, forming a loop behind the ascending colon. This unique sigmoid colon variation presented with four distinct parts and unusual peritoneal coverage.
Area of Science:
- Anatomy
- Surgical Anatomy
- Medical Case Reports
Background:
- Anatomical variations of the colon can impact surgical procedures.
- Detailed documentation of rare colonic anomalies is crucial for anatomical understanding.
Observation:
- A rare case of an excessively long and looped distal colon was discovered in a 50-year-old Japanese male cadaver.
- The anomalous colon extended from the left iliac fossa, looped behind the ascending colon, and had an unusual peritoneal covering and absent mesocolon.
Findings:
- The anomalous colon was divided into four parts with a unique course and vascularization from the inferior mesenteric artery and a marginal artery.
- The proximal portion was considered descending colon, and the distal portion sigmoid colon, based on its vascular supply and embryological implications.
Implications:
- This case highlights the importance of recognizing congenital anomalies of the colon during surgical procedures.
- Understanding such variations can aid in diagnosing conditions like colonic obstruction or volvulus.