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Colonoscopy

Sam Weissman, MD

Gastroenterologist located in Brighton Beach, Brooklyn, NY

Colonoscopy is used to diagnose and sometimes treat certain diseases and disorders of the large intestine, or colon. Though many patients feel apprehensive about having a colonoscopy, board-certified gastroenterologist Sam Weissman, MD, in Brooklyn, New York, provides reassurance and transparency to ensure you understand what to expect before, during, and after the procedure. To schedule your colonoscopy with an experienced provider, contact Dr. Weissman’s office in Brighton Beach today or easily request your visit with him online.

Colonoscopy Q & A

What is a colonoscopy?

A colonoscopy is a procedure that involves inserting a flexible tube with a camera affixed to the end into the rectum and the colon. During a colonoscopy, Dr. Weissman can clearly examine the inner lining of the rectum and the colon to look for problems like bleeding, inflammation, polyps, tumors, or ulcers.

How do I know if I need a colonoscopy?

If you’re experiencing the following signs or symptoms of colorectal disease, you may need a colonoscopy in order to find what’s causing your problems:

  • Bleeding
  • Blood in your stool
  • Unexplained weight loss or anemia
  • Abdominal pains


If you haven’t been experiencing any problems, you need your first colonoscopy around age 50. Dr. Weissman can help you determine when you should be screened.

What diseases can be detected during a colonoscopy?

Colonoscopy can detect cancer, polyps, inflammation, ulcers, bleeding, or tumors. If Dr. Weissman identifies any areas of concern, he can further evaluate those areas by taking a biopsy.

How do I prepare for a colonoscopy?

Before undergoing a colonoscopy, you need to empty your large intestine. That’s because any residue that remains can obscure Dr. Weissman’s view during the exam. 

In the days leading up to your colonoscopy, Dr. Weissman might ask you to:

  • Follow a special diet
  • Take a laxative
  • Use an enema kit
  • Adjust your medications


Dr. Weissman will let you know which medications can be taken and which can’t. You should also take special care to avoid eating or drinking after midnight the night before your test.

What should I expect during my colonoscopy appointment?

On the day of your colonoscopy, you change into a hospital gown and lie down on your side, with your knees pulled toward your chest.

Once you’re in position, Dr. Weissman administers general anesthesia, which puts you to sleep. Because you’re asleep, you won’t experience any pain. During the colonoscopy, Dr. Weissman uses the colonoscope to observe the lining of your rectum and large intestine. If he notices anything out of the ordinary, he can take a biopsy or order additional testing.

A colonoscopy takes anywhere between 30-60 minutes. Once the anesthesia wears off, you will likely feel tired and a little groggy, so be sure to arrange for someone else to drive you home.

If you’re concerned about your risk of colon cancer, make a colonoscopy appointment at the practice of Sam Weissman, MD, by calling the office today or scheduling online.