Transanal Endoscopic Microsurgery

What is transanal endoscopic microsurgery (TEM)?

Rectal lesions, polyps, and some early stage cancers can be treated with transanal resection and transanal endoscopic microsurgery (TEM). TEM is a minimally invasive technique that involves passing an endoscope through the anus. The endoscope is equipped with tiny microsurgical instruments, which allow the surgeon to remove cancerous tissue and other abnormal growths without the need for full abdominal surgery and without making any cuts in the skin.

What to expect from transanal endoscopic microsurgery

TEM is performed while you're under general anesthesia (sleeping). The surgeon uses low-pressure gas to distend your rectum, making it easier to move around within the cavity and more easily view and access problem areas. Once a tumor or lesion is removed, the surgeon can stitch the area while still working endoscopically. Recovery from TEM is usually brief, and you'll be able to return quickly to daily activities with less pain, less bleeding and less risk of infection than with traditional surgery.