Epidemiological aspects of soft tissue sarcomas (STS) - Consequences for the design of clinical STS trials

The purpose of the study was to gain insight into epidemiological aspects o f soft tissue sarcomas (STS), based on the population-based cancer registry of the Comprehensive Cancer Center North-Netherlands (CCCN), and to provid e data for the development of future STS clinical trials. 456 primary STS ( Kaposi, urogenital and gastro-intestinal STS excluded), registered from 198 9 to 1995 by the cancer registration of the Comprehensive Cancer Center Nor th-Netherlands (CCCN), were analysed. The annual, age-adjusted, STS inciden ce was 3.6 per 100 000. Incidence increased with age. Half of the patients were over the age of 65 years. Malignant fibrous histiocytomas and liposarc omas were most frequently encountered. At presentation, nodal involvement w as rare (3-8%). Distant metastases were more frequently encountered (9-14%) , and appeared to be related to tumour size and site. Above 70 years of age , 16% of patients received no treatment at all, especially for metastatic d isease. (C) 1999 Elsevier Science Ltd. All rights reserved.