• The colon is divided into 5 sections:
• The rectum as well as the sigmoid and descending colon are the
areas where juvenile polyps and ulcerative colitis are commonly
• The junction between the descending and transverse colons is
usually marked by the bluish blush of the spleen.
• The transverse colon can be recognized by the triangular-shaped
• The junction between the transverse and ascending (or right colon)
is usually marked by the bluish blush of the liver.
• The cecum can be verified by finding the small appendiceal opening,
the ileocecal valve, or seeing light transilluminate the right lower
• The cecum and terminal ileum are often involved in Crohn disease.