[Operative tactics and results in extensive operations for colorectal cancer].

Between 1969 and 1983 a total of 1918 patients with colorectal carcinoma were curatively operated. In 121 of these patients a curative procedure could be achieved despite tumor invasion of adjacent organs by extending the operation to include these involved structures. In 45% of these patients the histological examination revealed that there were only peritumorous inflammatory adhesions while in 55% of the cases a direct tumor invasion of the neighbouring organ was present. The 5-year-survival-rate in the 121 patients was 44%. The operative mortality of 12% (14 out of 121) is included. The final results were considerably worse if the tumor could not be removed en bloc.