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Beverly Hills · 435 N. Bedford Dr., Suite 308Mon–Fri 9:00 am – 5:00 pmMost PPO insurance accepted
Allen KamravaMD · MBA · FACS · FASCRS

Procedure

Resection of Rectal Tumor (TAMIS / TEMS)

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1-7 days
Success rate
Greater than 95% (for benign lesions)
Recurrence
5-15% (for T1 cancers)

What it is

What are TAMIS and TEMS?

Transanal Minimally Invasive Surgery (TAMIS) and Transanal Endoscopic Microsurgery (TEMS) are advanced, minimally invasive surgical techniques for the local excision of benign and early-stage malignant tumors in the rectum. These procedures are performed entirely through the anus, avoiding the need for abdominal incisions. TEMS utilizes a specialized operating proctoscope and stereoscopic visualization, while TAMIS adapts standard laparoscopic single-port devices and instruments for transanal use. Both techniques provide a magnified, stable view of the rectum, allowing for precise, full-thickness excision of rectal tumors with clear margins.

Am I a candidate?

Who is a Good Candidate for these Procedures?

Ideal candidates are patients with benign rectal polyps (adenomas) that are too large or complex for standard colonoscopic removal, or select patients with early-stage (T1) rectal cancers that have favorable characteristics. Favorable characteristics for T1 cancers include small size (less than 3 cm), well to moderately differentiated histology, no lymphovascular or perineural invasion, and location in the mid to upper rectum. These procedures are particularly advantageous for tumors that are difficult to reach with standard transanal excision techniques.

Recovery

What is the Recovery Like?

Recovery is typically very rapid. Most patients are discharged home on the same day or after a one-night hospital stay. Pain is usually minimal and managed with over-the-counter pain relievers. Patients can typically return to a normal diet and light activities within a few days. Strenuous activity and heavy lifting should be avoided for a couple of weeks. Maintaining soft stools with a high-fiber diet and adequate fluid intake is important during the recovery period.

Risks & considerations

What are the Risks?

While generally safe, these procedures have potential risks, including:

  • Bleeding: Minor bleeding from the excision site is common and usually self-limited. Significant bleeding requiring intervention is rare.
  • Perforation: There is a small risk of perforation into the peritoneal cavity, particularly for tumors located high in the rectum. This may require an abdominal operation to repair.
  • Infection: A pelvic abscess or infection can occur, though this is uncommon.
  • Functional Changes: Some patients may experience temporary changes in bowel function, such as increased frequency or urgency. Permanent incontinence is very rare.
  • Recurrence: For malignant tumors, there is a risk of local recurrence if the cancer is more advanced than initially staged or if high-risk features are present.

Sources

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