TITLE:
Assessments of Pudendal Motor and Sensory Nerves in Patients with or without Fecal Incontinence after Low Anterior Resection for Lower Rectal Cancer
AUTHORS:
Ryouichi Tomita, Sakurai Kenichi, Shigeru Fujisaki
KEYWORDS:
Low Anterior Resection, Lower Rectal Cancer, Pudendal Motor Nerve, Pudendal Sensory Nerve, Fecal Incontinence
JOURNAL NAME:
Journal of Cancer Therapy,
Vol.11 No.4,
April
22,
2020
ABSTRACT: Background:To clarify the pudendal motor (PMN) and sensory (PSN) nervesplay in preventing fecal incontinence (FI) after low anterior resection (LAR) for lower rectal cancer, the PMN and PSN functions were studied. Methods:Sixty patients were divided into groups A (n = 20, FI) and B (n = 40, continence). These were compared with group C (n = 30, control subjects). PMN latency (PMNL) (right, left, and posterior sides of the anal canal) was studied by sacral magnetic stimulation. Anal mucosal electric sensitivity (AMES) was measured at the lower, dentate line (DL), and upper zones. Results:The distance of anastomosis from anal verge (DAAV) in group A was significantly shorter than in group B (pvalue pvalue pvalue pvalue Conclusion:FI after LAR with a short DAAVmaylead toexternal anal sphincter dysfunction due to damage of both PMN and PSN.