Iliac colon
The iliac colon is the portion of the descending colon which is situated within the left iliac fossa. It is about 12 to 15 cm long.
It curves inferior-ward and medial-ward anterior of the iliacus and psoas muscles. It ends by transitioning into the sigmoid colon at the superior aperture of the lesser pelvis.
It is covered by peritoneum only on its anterior and lateral surfaces.