A colonoscopy is used to detect colon abnormalities, growths and cancer. Your colon must be as clear as possible for an accurate assessment. Colonoscopy preparation involves following a special diet and taking laxatives to clear your large bowel.

The spleen is a lymphatic organ located in the body's upper left abdominal quadrant. It filters and stores red blood cells, removes bacteria and other microorganisms and produces white blood cells for immunity.