Diverticulum located in the rectum is an exceptional find with fewer than 50 cases published. The etiology of the diverticulum of the rectum still has controversial aspects regarding its origin is congenital or acquired. Recently, alterations of the evacuative dynamic had been associated with the development of the disease. Nevertheless, until the present date, the manometric alterations in patients with diverticulum of the rectum were not studied. OBJECTIVE: The aim of the present study is to demonstrate the results of electromanometric study carried out in a patient with isolated diverticulum of the rectum. CASE REPORT: A man and a woman, 56 and 58 years-old, respectively, were submitted to colonoscopy, barium enema, endorectal ultrasound and magnetic resonance of the pelvis to diagnose and document the presence of diverticulum located in the rectum. The patients were submitted to manometry using catheter with eight-channel perfusion under water at 0.3 ml/min/channel, through pneumatic and hydraulic capillary infusion system. The anorectal manometry showed normally sphincter pressure profile both in rest and squeezes pressure state, and did not find sphincter asymmetries. The anorectal inhibition reflex was present with normal values and the sensibility and rectal complaisance were between the normal limits. The vector volume analysis did not show any significant alterations and it was concluded by normal manometric anorectal study. CONCLUSION: The anorectal manometry study did not demonstrate the existence of pressure disturbances in anorectal sphincter, enhancing the possibility that the rectal diverticulum can be congenital, developing at points where there is major weakness of the rectal wall.
Diverticulum; Diverticulum; Rectum; Manometry
