Oncological quality and preliminary long-term results in laparoscopic colorectal surgery

Background: Our aim here was interpret data on the perioperative course, oncological quality, and preliminary long-term results of laparoscopic colorectal surgery carried out with a curative intent. Methods: The data were collected within the framework of a prospective multicenter observational study that has been ongoing since 1 Aug 1995 and includes 46 hospitals. Of a total of 3133 patients, 826 (26.4%) underwent a curative resection for colorectal carcinoma. Results: The average age of the patients was 67.9 years; the sex distribution was almost 1:1. UICC staging of tumors ( stages I, II, and III) showed the following figures: 301/36.4%, 265/32.1%, and 260/31.5%. In the majority of cases, an oncologically radical resection with high transection of the supplying vessels was performed. Intraoperative seeding of tumor cells was reported in 1.8% of the patients. In eight cases, the seeding was due to spontaneous rupture of the tumor. A mean of 13.5 lymph nodes in the resected specimen were investigated histopathologically (10.9 lymph nodes in stage I, 15 each in stages II and III). Depending on the individual hospital, we found a remarkable variation in the number of lymph nodes investigated. With a mean follow-up period of 2.1 years, Kaplan-Meier survival function showed acceptable results, both for rectal and colonic carcinoma, in comparison with conventional colorectal surgery. A stage-related consideration of the survival data yielded similar results. Conclusion: All in all, the results show that a laparoscopic colorectal procedure can meet oncological radicality criteria, even though certain reservations - in particular, in the case of procedures done with a curative intent - have not been completely eliminated.