Transanal Minimally Invasive Anal Canal Polyp Resection

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Abstract

Endoscopic mucosal resection (EMR) and endoscopic submucosal dissection (ESD) are operative endoscopies that have been performed since a long time. Recently, an evolution of laparoscopy called transanal minimally invasive surgery began to be popularized, and it can be adopted in the face of difficult cases for EMR/ESD. In this video, a 36-year-old woman was submitted to transanal minimally invasive surgery resection, after unsuccessful ESD, for a 2-cm polyp located anteriorly in the anal canal, just beyond the pectineal line. Preoperative workup showed a uT1m versus T1sm N0 M0 lesion. The procedure was performed with a new reusable transanal platform and a monocurved coagulating hook and grasping forceps. The operative time was 90 minutes. No perioperative complications were registered, and the patient was discharged on postoperative day 1. The pathologic report showed a villotubular adenoma with high-grade dysplasia and distant-free margins. After 1 year, the patient was going well, without any recurrent disease. Transanal minimally invasive surgery resection is a good alternative to conventional endoscopic therapies, allowing a meticulous dissection under the magnified operative field's exposure, and a mucosal-submucosal flap closure under satisfactory surgeon's ergonomics.

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