1.   Although the median survival time was slightly better in the diploid than in the aneuploid group, this difference was not statistically significant.

2.   Survival time was defined as the period between surgery and death.

3.   This difference in survival time was not significant.

4.   Preoperative radiotherapy did not prolong the median survival time.

5.   Although a trend for an increased survival time in patients with diploid tumours was found this difference was not significant.

6.   The preoperative radiotherapy did not result in a significant prolongation of survival time.

7.   A comparison using the log rank test showed a difference in survival times in patients with disease at various sites.