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  • Title: Local excision of rectal tumours by transanal endoscopic microsurgery.
    Author: Bretagnol F, Merrie A, George B, Warren BF, Mortensen NJ.
    Journal: Br J Surg; 2007 May; 94(5):627-33. PubMed ID: 17335125.
    Abstract:
    BACKGROUND: Transanal endoscopic microsurgery (TEM) allows locally complete excision of rectal tumours and provides an alternative to conventional surgery for benign tumours. However, its role in the curative treatment of invasive carcinoma is controversial. The aim of this study was to determine the morbidity and long-term results for rectal tumours excised by TEM. METHODS: Between February 1993 and January 2005, 200 patients underwent TEM for excision of adenomas (148) or carcinomas (52). The median tumour distance from the anal verge was 8 (range 1-16) cm. RESULTS: Mortality and morbidity rates were 0.5 and 14.0 per cent respectively. At a median follow-up of 33 (range 2-133) months, local recurrence had developed in 11 patients (7.6 per cent) with an adenoma. Histological examination of carcinomas revealed pathological tumour (pT) stage 1 in 31 patients, pT2 in 17 and pT3 in four. Immediate salvage surgery was performed in seven patients (13 per cent). At a median follow-up of 34 (range 1-102) months, eight patients (15 per cent) with carcinomas had developed local recurrence. The overall and disease-free 5-year survival rates for patients with carcinomas were 76 and 65 per cent respectively. CONCLUSION: TEM is an appropriate surgical treatment option for benign rectal tumours. For carcinomas, it is oncologically safe provided that resection margins are clear, but strict patient selection is required.
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