Laparoscopic abdominoperineal resection: early postoperative results of a prospective study involving 116 patients. The Laparoscopic Colorectal Surgery Study Group.

PURPOSE

Although laparoscopic colorectal surgery is attracting ever more attention, its use for curative treatment of colorectal carcinoma in particular continues to be controversial. The present study was an attempt to analyze the results of the perioperative course, oncologic quality, and preliminary long-term results.

METHOD

The data considered here were collected within the framework of a prospective, observational study initiated on August 1, 1995, and involving a total of 18 institutions in Germany and Austria. At the end of three years, the results are now being presented selectively, i.e., focusing only on abdominoperineal resection.

RESULTS

A total of 116 patients underwent laparoscopic abdominoperineal resections, 98 (84.5 percent) of which were performed with curative intent. The mean operating time was 226 (confidence interval, 140-365) minutes. Seven patients (6 percent) experienced an intraoperative complication, which in more than one-half of the cases was a vascular injury involving the presacral venous plexus; the conversion rate was 3.4 percent. Postoperatively, 40 patients developed 97 complications--including those of a very minor nature--giving an overall morbidity rate of 34.4 percent. Reoperation in six patients (5.2 percent) had to be performed for an afterbleed in one-half of the cases and ileus in the other one-half. Postoperative mortality was a low 1.7 percent. In most of the curative resections, an oncologically radical operation with high transection of the inferior mesenteric artery and a complete dissection of the pelvis down to the floor was performed. The median number of lymph nodes investigated was 11.5, and there was wide fluctuation in the numbers among the individual institutions. Tumor cell dissemination occurred intraoperatively in five patients. In the meantime, 79 patients (81 percent) underwent at least one follow-up examination, the mean follow-up period being 491 days. Seven patients developed a local recurrence, and a further six patients developed distant metastases. For recurrence-free survival rate, the Kaplan-Meier estimation calculated a probability of 71 percent.

CONCLUSION

Not all of the reservations about laparoscopic abdominoperineal resection, in particular with regard to resection with curative intent, have yet been eliminated. The present study does, however, show that a laparoscopic approach can in principle meet oncologic requirements of radicality and, with regard to the postoperative course, is associated with considerable benefits to the patient.