Between 1975 and 1984, 125 cases of histologically confirmed soft tissue sarcomata (STS) were registered in the Department of Clinical Oncology in Edinburgh. Of these, 100 were eligible for analysis of prognostic factors. The overall 5-year survival rate was 21.5%. Univariate analysis demonstrated that extent of surgery, radical versus palliative or no radiotherapy, mass as a presenting symptom, metastases at presentation, site, histological type, mitotic activity, grade and UICC stage all had a statistically significant effect on survival. Analysis using the proportional hazard regression model was performed on the 87 patients for whom all variables were recorded. When all histological and clinical features and treatment modalities were included in the model then radiotherapy, surgery, necrosis, sex and mitoses were identified as independent prognostic variables. When symptoms and treatment were excluded then the multivariate analysis identified sex and mitotic activity as independent parameters. For the 33 superficial STS with tumour size recorded multivariate analysis revealed size, necrosis and cellularity as independent prognostic variables. For the 31 deep STS histological type, sex, surgery and radiotherapy were identified as independent prognostic parameters.
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