The sigmoid mesocolon is a fold of peritoneum which retains the sigmoid colon. Its attachments are required knowledge of the CEM syllabus.
The sigmoid mesocolon is an inverted V-shaped attachment of the sigmoid colon to the abdominal wall. The apex of the V is attached by the bifurcation point of the left common iliac artery into internal and external branches.
The medial or right limb ends in the median plane at the level of the third sacral vertebra (S3). The lateral or left limb descends along the medial border of the left psoas major.
