Besluitvorming over preoperatieve radiotherapie bij rectumcarcinoom*

Objective

To investigate the information provision concerning possible benefits and harms of short-course preoperative radiotherapy (PRT) at pre-treatment consultations between radiation oncologists and rectal cancer patients.

Design

Observational study.

Method

We audiotaped the consultations between 17 radiation oncologists and 81 patients with primary rectal cancer who were eligible for PRT. The recordings were transcribed and analysed descriptively.

Results

A median of seven benefits/harms of PRT were addressed at each consultation (range, 2-13). This number differed both in and between individual oncologists and was not consistently associated with the patient’s characteristics. A total of 30 different treatment outcomes was addressed. The effect of PRT on local control was addressed in all consultations, and the effect on survival in 16%. The most important adverse effects according to the literature are bowel dysfunction and sexual dysfunction. These were addressed in 82% and 85% of consultations, respectively; sexual problems were discussed significantly more often with male than female patients. Four out of five patients did not initiate discussion on potential benefits/harms.

Conclusion

There was a considerable variation in the number and nature of benefits and harms of PRT that were discussed prior to treatment. This variation indicates a lack of clarity concerning which benefits/harms of radiotherapy should be discussed with newly-diagnosed patients. This suboptimal provision of information to patients hampers the process of shared decision making, in which the decision is based on each individual patient’s weighing of benefits and harms. We do not believe our findings to be specific for PRT, but expect to find similar variation in provision of information with regard to other treatment decisions.

Conflict of interest and financial support for this article: M. Kunneman, C.A.M. Marijnen, A.M. Stiggelbout and A.H. Pieterse have received a research grant from the Dutch Cancer Society (UL 2009-4431).