Endoscopic mucosal resection

Gastrointestinal endoscopic mucosal resection (EMR) is a procedure to remove cancerous or other abnormal tissues (lesions) from the digestive tract.

Endoscopic mucosal resection is performed with a long, narrow tube equipped with a light, video camera and other instruments. During EMR of the upper digestive tract, the tube (endoscope) is passed down your throat to reach an abnormality in your esophagus, stomach or upper part of the small intestine (duodenum).

To remove lesions from the colon, the tube is guided up through the anus.

Primarily a treatment procedure, EMR is also used to collect tissues for diagnosis. If cancer is present, EMR can help determine if the cancer has invaded tissues beneath the digestive tract lining.


Why it's done Risks How you prepare What you can expect Results

Endoscopic mucosal resection is a less invasive alternative to surgery for removing abnormal tissues from the lining of the digestive tract. These tissues may be:

  • Early-stage cancer
  • Precancerous lesions, which may become cancerous

Endoscopic mucosal resection is usually performed by a specialist in digestive system disorders (gastroenterologist) who has expertise in this technique.

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