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Surgical Treatment of Chagasic Megacolon by Abdominal Rectosigmoidectomy With Immediate Posterior End-to-Side Stapling (Habr-Gama Technique)

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Diseases of the Colon & Rectum

Purpose

Various techniques have been used in the surgical treatment of Chagasic megacolon, including sympathectomy, sphincterotomy, anterior abdominal resection with high or low anastomosis, pull-through procedures, and Duhamel technique. However, results have not been consistently satisfactory, with reportedly high morbidity and mortality rates. The purpose of this study was to assess the technique and results of anterior rectosigmoidectomy with immediate posterior colorectal end-to-side stapled anastomosis for the treatment of Chagasic megacolon.

Methods

A prospective, noncontrolled study between 1989 and 2000 analyzed 49 patients with Chagasic megacolon. Preoperative barium enema confirmed Chagasic megacolon in all patients and preoperative anorectal manometry in 33 patients (67 percent). Rectal stump closure was undertaken by surgical stapling in 41 patients (84 percent); mechanical colorectal anastomosis was accomplished with a circular stapler in all patients.

Results

Symptoms of intestinal constipation ranged from 6 months to 40 years, Chagas' serology was positive in 98 percent of patients, 41 percent used bowel enemas for evacuation, and 71 percent had a history of fecaloma. The overall postoperative complication rate was 20 percent. Surgical complications occurred in 18 percent, 2 percent had nonsurgical complications, and there was no mortality. Postoperative barium enema was performed in 82 percent of cases, confirming the absence of disease. Postoperative anorectal manometry demonstrated normal resting pressure and rectal capacity; the inhibitory reflex remained absent and rectal sensitivity was increased. Ninety-three percent of patients were followed for more than 48 months, and all patients reported daily stool elimination without recurrence of constipation.

Conclusions

The current study indicates that our technique is effective for surgical treatment of patients with Chagasic megacolon.

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Authors and Affiliations

  1. Department of Gastroenterology, Colorectal Surgery Division, University of São Paulo, School of Medicine, São Paulo, Brazil

    Sergio C. Nahas M.D., Angelita Habr-Gama M.D., Caio S. Rizkallah Nahas M.D., Sergio E. Alonso Araujo M.D., Carlos F. Sparapan Marques M.D., Carlos W. Sobrado M.D., Sylvio F. Bocchini M.D. & Desiderio Roberto Kiss M.D.

  2. Rua Jabebira, 136, 05602-020, São Paulo, SP, Brazil

    Sergio C. Nahas M.D.

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  1. Sergio C. Nahas M.D.
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  2. Angelita Habr-Gama M.D.
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  3. Caio S. Rizkallah Nahas M.D.
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  4. Sergio E. Alonso Araujo M.D.
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  7. Sylvio F. Bocchini M.D.
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  8. Desiderio Roberto Kiss M.D.
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Correspondence to Sergio C. Nahas M.D..

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Nahas, S.C., Habr-Gama, A., Nahas, C.S.R. et al. Surgical Treatment of Chagasic Megacolon by Abdominal Rectosigmoidectomy With Immediate Posterior End-to-Side Stapling (Habr-Gama Technique). Dis Colon Rectum 49, 1371–1378 (2006). https://doi.org/10.1007/s10350-006-0639-6

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  • DOI: https://doi.org/10.1007/s10350-006-0639-6

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