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Transanal endoscopic microsurgery.

Chris Cunningham1

  • 1Oxford University Hospitals NHS Trust, Oxford, OX3 7LJ, UK, chriscunningham@nhs.net.

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Transanal endoscopic microsurgery (TEM) offers organ preservation for early rectal cancers, achieving outcomes comparable to radical surgery. Robust surveillance and consideration of completion surgery or radiotherapy can further improve results for selected patients.

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Area of Science:

  • Oncology
  • Surgical Oncology
  • Gastroenterology

Background:

  • Organ-preserving strategies are increasingly important in rectal cancer management.
  • Transanal endoscopic microsurgery (TEM) is a key technique for excising early-stage rectal cancers.

Purpose of the Study:

  • To evaluate the efficacy and safety of TEM for early rectal cancer.
  • To explore the role of TEM in conjunction with other treatment modalities like radiotherapy.
  • To define criteria for selecting patients for TEM and subsequent management.

Main Methods:

  • Review of outcomes for patients treated with TEM for early rectal cancer.
  • Analysis of recurrence rates and overall survival.
  • Evaluation of pathological features and their impact on treatment decisions.
  • Discussion of the potential integration of TEM with neoadjuvant or adjuvant radiotherapy.

Main Results:

  • TEM can successfully treat carefully selected early rectal cancers with low recurrence risk.
  • Oncological outcomes for TEM are similar to radical surgery in appropriate candidates.
  • Patients with high-risk features post-TEM may benefit from completion radical surgery.
  • Radiotherapy may expand eligibility for rectal preservation, particularly in complete responders.

Conclusions:

  • TEM is a viable organ-preserving option for early rectal cancer.
  • Effective surveillance and risk-adapted management are crucial after TEM.
  • Further research, including clinical trials, is needed to optimize TEM use in advanced rectal cancers and with radiotherapy.