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Related Experiment Video

Updated: May 6, 2026

Robot-assisted Total Mesorectal Excision and Lateral Pelvic Lymph Node Dissection for Locally Advanced Middle-low Rectal Cancer
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[Transanal endoscopic operations for rectal tumours].

Carlos Gavilanes Calvo1, José Carlos Manuel Palazuelos2, Joaquín Alonso Martín2

  • 1Servicio de Cirugía General, Hospital Universitario Marqués de Valdecilla, Santander, España.

Cirugia Espanola
|October 31, 2013
PubMed
Summary

Transanal endoscopic operation (TEO) offers a minimally invasive approach for rectal lesions, demonstrating effectiveness for benign and early-stage malignant tumors with low morbidity. This technique allows complete excision of benign lesions and provides a viable option for selected early-stage rectal cancers.

Keywords:
Adenocarcinoma rectalAdenomas rectalesCirugía endoscópica transanalRectal adenocarcinomaRectal adenomasTransanal endoscopic surgery

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Area of Science:

  • Colorectal Surgery
  • Minimally Invasive Procedures
  • Oncology

Context:

  • Transanal endoscopic operation (TEO) is an advanced surgical technique for rectal lesion treatment.
  • Conventional surgical methods for rectal lesions can involve significant morbidity.
  • TEO offers a potentially less invasive alternative for both benign and selected malignant rectal conditions.

Purpose:

  • To evaluate the efficacy and outcomes of Transanal Endoscopic Operation (TEO) in a series of patients with rectal lesions.
  • To assess the feasibility of TEO for benign adenomas and early-stage (pT1) rectal adenocarcinomas.
  • To compare the morbidity and recurrence rates of TEO with conventional surgical approaches.

Summary:

  • A series of 70 patients underwent TEO for benign and early-stage malignant rectal lesions.
  • Pathological analysis revealed malignancy in 61% of initially presumed benign lesions.
  • The procedure demonstrated a 36% postoperative morbidity rate, with complete excision for benign lesions and acceptable recurrence rates for malignant pT1 and pT2 tumors.

Impact:

  • TEO enables the complete excision of benign rectal lesions not amenable to conventional endoscopic or transanal resection.
  • The technique is validated for early-stage malignant rectal tumors (pT1) with pathological confirmation.
  • TEO presents a valuable minimally invasive option, potentially reducing patient morbidity compared to traditional rectal surgery.