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English Abstract
Journal Article
[Role of intersphincter resection among the surgical options for cancer of the distal rectum].
Chirurgia Italiana 2001 November
The surgical treatment of low rectal cancer has yet to be standardised. The aims of the study were to define the curative role of intersphincteric resection and to evaluate its indications and functional results through a retrospective clinical experience. From 1988 to 2000, out of 783 operations for primary rectal cancers (resectability rate 96%; restorative resections 83% and APR 10%) an intersphincteric resection was performed in 48 patients (31 male, 17 female, average age 62) for tumours located at a mean distance of 4.5 cm from the anal verge. Clinical stage: 27 T3 (56.3%), 12 T2, 5 T4 and 4 T1. All the operations were rated R0. TME with N-S, endo-anal distal transection and manual colo-anal anastomosis with a protective stoma were systematically performed. The mean follow-up was 46 months (range: 12-80). Functional results were evaluated with a prospective standardised questionnaire. There was no hospital mortality (30 days). The total morbidity rate was 22% with anastomotic leakage (clinical or X-ray evidence) in 12.5%. Four anal stenoses needed dilatation. Only one local recurrence six years after operation (2.1%). Nine patients died of systemic metastases within 3 years of surgery; the others are still alive and disease-free. Minor faecal incontinence with frequency and urgency occurred in 68.7% of cases at 3 months after protective stoma closure and in 37.5% after 6 months. After one year continence was good in 85.4% of survivors. Only one case required a permanent stoma for poststenotic total incontinence. The best functional results were achieved by colonic pouch reconstruction. For selected low rectal cancers (T2/T3) without voluntary sphincter infiltration, intersphincteric resection is safe and effective for oncological and functional purposes. The procedure requires accuracy in dissecting the anorectal junction. Preoperative radiotherapy may increase the indications for intersphincteric resection as well as the availability of a disease-free margin. A manual colo-anal anastomosis with colonic pouch interposition is strongly recommended.
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