Diverticulum locatedin the rectum is an exceptional find with fewer than 50 cases published. Theetiology of the diverticulum of the rectum still has controversial aspects regardingits origin is congenital or acquired. Recently, alterations of the evacuativedynamic had been associated with the development of the disease. Nevertheless,until the present date, the manometric alterations in patients with diverticulumof the rectum were not studied.
OBJECTIVE: The aim of the present study is to demonstrate the resultsof electromanometric study carried out in a patient with isolated diverticulumof the rectum.
CASE REPORT: A man and a woman, 56 and 58 years-old, respectively, weresubmitted to colonoscopy, barium enema, endorectal ultrasound and magnetic resonanceof the pelvis to diagnose and document the presence of diverticulum locatedin the rectum. The patients were submitted to manometry using catheter witheight-channel perfusion under water at 0.3 ml/min/channel, through pneumaticand hydraulic capillary infusion system. The anorectal manometry showed normallysphincter pressure profile both in rest and squeezes pressure state, and didnot find sphincter asymmetries. The anorectal inhibition reflex was presentwith normal values and the sensibility and rectal complaisance were betweenthe normal limits. The vector volume analysis did not show any significant alterationsand it was concluded by normal manometric anorectal study.
CONCLUSION: The anorectal manometry study did not demonstrate the existenceof pressure disturbances in anorectal sphincter, enhancing the possibility thatthe rectal diverticulum can be congenital, developing at points where thereis major weakness of the rectal wall.
