[Experiences with 169 mechanical colorectal anastomoses (1981-1984)]

An account is given of 169 rectal anastomosis performed with the EEA-stapler between 1981 and 1984 in the Municipal Hospital Waid of Zurich. The average age of the patients was 63.8 years. 71.6% of the operations have been performed because of a rectosigmoidal carcinoma (50.4% of them with lymph node metastasis) and 28.4% because of a benign rectal disease. 44.4% of the anastomosis were localized at 3.5 to 7 centimeter, 34.9% between 7.5-11 and 20.7% higher than 11 centimeter above the anus. We used the biggest loading unit of 31 millimeter diameter in 89% of all cases. A primary anastomotic insufficiency was discovered intraoperatively in 6.5% (anastomosis sutured or redone). 3.1% of the patients had a temporary colostomy. We found a 4.3% rate of secondary anastomotic insufficiency. All those colo-cutaneous fistula healed spontaneously. Non specific complications as thromboembolism, urinary or wound infection and others were detected in 31.3% of the cases. We found a perioperative mortality rate of 2.5% with no intraoperative deaths. 91.4% of the patients had a follow-up over 2-5 years. There was a need of dilatation of anastomotic stenosis in 2.5% of the cases within the first 4-8 postoperative months. 40.2% of the cancer patients died during their follow-up, two thirds of them within the first two years. The local recurrence rate after 2-5 years of the cancer patients who were operated curatively was 22.3% and 10.7% for distant metastasis. 60.2% were disease free. 54.5% of the recurrent disease was found in patients with primary tumors stage Dukes C2 and D.(ABSTRACT TRUNCATED AT 250 WORDS)