Because colon and rectal cancer is usually a slow process, flexible sigmoidoscopy is usually repeated every 3-5 years if no abnormalities are noted. Fecal occult blood testing may be performed annually between flexible sigmoidoscopy exams. This is a process which eliminates stool from the colon, so that unobstructed visualization of the colon may occur. Physicians have different preferences for bowel preparations, therefore consult your physician for guidance. For additional information regarding flexible sigmoidoscopy, click here flexible sigmoidoscopy.
Prostate cancer is the most common cancer in men in the United States.
Risk factors for prostate cancer are increasing age, African American race, and family history. Currently, two methods of screening may be used in to prevent prostate cancer. While DRE alone can not determine if prostate cancer exists, it provides useful information for your physician. It is important to note, that most enlarged prostates are not cancerous, however further investigation is necessary when an enlarged prostate is detected. PSA is a tumor marker that can be useful in those diagnosed with prostate cancer.