[Endoscopic treatment of rectal neuroendocrine tumors: multicentre study in Peru]

The incidental detection of rectal neuroendocrine tumors (NET) has increased but there is no proper consensus about treatment.

Evaluate the efficacy and safety of endoscopic treatment for rectal NET less than 20 mm, with emphasis in "standardized treatment".

From January 2012 to April 2016, we included patients with rectal NET less than 20 mm resected by conventional EMR, EMR-B and ESD. We considered as "standardized treatment" the one that has precise indication and technical rigor (EMR-B for lesions ≤ 10 mm and ESD for lesions between 11 and 20 mm). We evaluate complete resection rates and incidence of complications.

23 patients with 23 rectal NET were included. The mean age was 52.96 ± 12.44 years. The mean tumor diameter was 8.8 ± 3.4 mm. The complete resection rates by conventional EMR, EMR-Band ESD were 50 (3/6), 92.8 (13/14) and 100% (3/3), respectively; while by standardized and conventional treatment were 100 (14/14) and 55.5% (5/9), respectively. Complications occurred in 4 cases (17.4%), bleeding in 2 and perforation in 2, all of them solved by endoscopy.

Endoscopic treatment by EMR-B and ESD is efficacious and safe for rectal NET ≤ 20 mm. Standardized treatment improve the efficacy of endoscopic treatment.