[Intraoperative and percutaneous radiotherapy of pancreatic carcinoma]

Therapeutic strategies in the treatment of pancreatic carcinoma are based on the high number of non-resectable cancers, the high relative radioresistance and the high distant metastases rate. Even in curatively resected carcinomas, a locally effective treatment modality is needed because of the risk of microscopical residual disease in the peripancreatic tissue. The efficacy of radiotherapy is dose dependent. Based on an analysis of published data a dose of more than 50 Gy is recommended, resulting in a high morbidity rate with external beam radiotherapy alone. The use of intraoperative radiotherapy allows locally restricted dose escalation without increased perioperative morbidity. In adjuvant and in primary treatment, local tumor control was improved (70-90%). With palliative intent, pain relief was obtained rapidly in over 60% of patients and led to improved patient performance. As a result of the high distant metastases rate, even in curatively resected carcinomas, the overall prognosis could not be significantly improved. Further dose escalation is limited by the increasing incidence of upper gastrointestinal bleeding (20-30%).