Local excision for rectal cancer: a minimally invasive option

Area of Science:

• Colorectal Surgery
• Minimally Invasive Procedures
• Oncology

Background:

• Transanal excision (TAE) and transanal endoscopic microsurgery (TEM) are established minimally invasive surgical techniques for rectal cancer.
• TEM is recognized as the standard of care for transanal rectal tumor excision.

Purpose of the Study:

• To compare the efficacy and outcomes of TEM versus TAE for rectal cancer treatment.
• To evaluate TEM's benefits against traditional rectal resection and explore newer techniques like transanal minimally invasive surgery (TAMIS).

Main Methods:

• Comparative analysis of surgical techniques for rectal cancer.
• Review of existing literature and clinical data on TAE, TEM, and TAMIS.

Main Results:

• TEM demonstrates significantly better excision quality and lower recurrence rates than TAE.
• TEM is associated with reduced postoperative morbidity and improved functional outcomes compared to rectal resection, with comparable survival rates for early-stage cancers.

Conclusions:

• TEM is a superior minimally invasive option for selected rectal cancers compared to TAE.
• TEM offers advantages over traditional surgery, and transanal minimally invasive surgery (TAMIS) is an emerging alternative requiring further investigation.