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  • Title: Operative and functional results of total mesorectal excision with ultra-low anterior resection in the management of carcinoma of the lower one-third of the rectum.
    Author: McAnena OJ, Heald RJ, Lockhart-Mummery HE.
    Journal: Surg Gynecol Obstet; 1990 Jun; 170(6):517-21. PubMed ID: 1693016.
    Abstract:
    Eighty-one patients underwent anterior resection with curative (n = 57) or palliative (n = 24) intent for tumors below 7 centimeters from the anal verge. If a right angled clamp could be applied below the tumor at operation after full mobilization of the mesorectum and rectum, the procedure was performed in preference to abdominoperineal excision. The mean follow-up time was 4.8 years. Of the curative group, 26 had lesions within 5 centimeters of the anal verge. Thirty-one per cent were Dukes' A; 37 per cent, B, and 32 per cent, C lesions. The margin of distal clearance ranged from 2 to 35 millimeters. In five patients, squamous mucosa was observed in the distal doughnut. Serious postoperative complications occurred in 17 per cent of the curative series, one-half of which occurred within the first two years of the study period. In six patients, the temporary colostomy has not been closed. The incidence of local recurrence in the curative series was 3.5 per cent, and the over-all survival rate was 81 per cent at five years. Full continence was achieved within two years of closure of the colosomy in 85 per cent of the patients. In the palliative group, 11 of the 19 patients had temporary colostomies and 80 per cent were continent within six months of operation. The technique of total mesorectal excision and sphincter preservation by stapled coloanal anastomosis in the treatment of carcinomas of the lower one-third of the rectum may be an alternative to abdominoperineal excision. The final decision in such instances is made intraoperatively. The operative and functional results are satisfactory, but it is difficult to anticipate the patients who will not do well by preoperative criteria. Even in palliative procedures, low anterior resections provided satisfactory continence. Serious postoperative complications were more likely to occur if full mobilization of the splenic flexture was not routinely performed.
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