Depending on what your doctor finds, other procedures may be performed through the endoscope. These might include taking a biopsy or removing a polyp. These procedures are painless.
There are many ways that a polyp can be removed, and the choice is related to size and shape. Your doctor will choose the technique that is best for you. One option is to use a wire snare device to grasp the polyp, and then remove it with electrical current. After the polyp is removed, it is passed through the endoscope and sent to the laboratory for examination.
After any treatments are finished, the doctor will slowly pull out the endoscope tube through your rectum.
A colonoscopy will usually take 30 to 60 minutes, depending on what is found and if any additional procedures are performed.