The document discusses several medical procedures and tests: Colonoscopy allows doctors to examine the entire large intestine and remove polyps or growths. It is used to screen for colon cancer. Bitewing x-rays, the most common dental x-rays, are taken with part of the film between the teeth to check for cavities. Hematochezia is the medical term for passing bright red blood in stool, which can be a symptom of colon cancer or hemorrhoids. The serum bilirubin test measures waste in the bloodstream and elevated levels can indicate liver disease.