Endoscopic Submucosal Resection With a Ligation Device for Pediatric Rectal Neuroendocrine Tumor

A 13-year-old boy with a 3-month history of diarrhea was successfully treated for a rectal neuroendocrine tumor (NET) using endoscopic submucosal resection with ligation (ESMR-L). Rectoscopy revealed a submucosal tumor in the lower rectum, diagnosed as a rectal NET upon pathological examination. ESMR-L resulted in complete tumor resection without complications. Pathological examination confirmed a 6-mm low-grade NET with no vascular invasion or positive tumor margins. The patient was discharged without complications. This case study indicates that ESMR-L can be applied to rectal NET in children, necessitating further investigation on its efficacy and safety in more patients.