Endoscopic Submucosal Dissection (ESD)

What is an Endoscopic Submucosal Dissection (ESD)?
ESD is an advanced endoscopic procedure used to remove gastrointestinal tumors that have not entered the muscle layer. ESD may be done in the esophagus, stomach or colon.

About the Procedure
Under anesthesia, a long narrow tube is passed through the throat to reach the lesion in the stomach, or the tube is passed through the anus to reach the lesion in the colon.

The procedure consists of three steps:

  1. Injecting fluid into the submucosa to elevate the lesion
  2. Cutting the surrounding mucosa of the lesion
  3. Dissecting the submucosa beneath the lesion

You may not eat or drink anything 8 hours prior to the procedure. If ESD is performed in the colon, your nurse practitioner or physician will prescribe a colon preparation.

During the Procedure
You will be asked to change into a gown before the procedure. You will be given a sedative by the anesthesiologist who will be present to monitor your vital signs during the examination. You will not experience any sensation of gagging or choking. A mouthpiece will be placed between your teeth to protect your mouth. You will lie on your left side, and the endoscope will be passed through your mouth and into the esophagus, stomach and duodenum. The endoscope does not interfere with your breathing.

After the Procedure
After the procedure, you will be admitted to the hospital and monitored overnight. The following day you will have an upper endoscopy, where the doctor will evaluate the dissection sites for any complications.