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A colonoscopy is the exam of the colon or large intestine. Basically the physician, oftentimes, a gastroenterologist, will insert a long flexible tube, which has a lighting source, and it may also have an operative channel such that you can place a device through this long hose, so to speak, where you can take tissue samples or you can lasso a polyp. So colonoscopies a examination of the large intestine to either look for sources of bleeding such as polyps or tumors, or in the case of this discussion, dilated veins, hemorrhoids.

Doctor Profile

Eugene Trowers, MD, MPH, FACP


  • Board Certified by the American Board of Internal Medicine in General Internal Medicine and Gastroenterology
  • Graduated from the New York University School of Medicine in 1976 and has been in practice for over 42 years 
  • Listed in Best Doctors in America, and The Best Doctors in America: Central Region

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