Abstract

Prognostic Factors in Papillary and Follicular Carcinomas of the Thyroid . We analyzed several prognostic factors in papillary and follicular carcinomas of the thyroid gland on the basis of 15 and 20 year cumulative survival rates in our series followed up from 14 to 28 years. We Serected sex, age at surgery, TNM classification, and histopathological type as predominant factors and performed multivariate analyses based on Cox's proportional hazard model. Age at surgery was the single most important prognostic factor with the risk ration of 34. 38. T and N classifications were of some prognostic signficance with the risk ratios of 1 .90 and 3.05, respectively. We could not confirm the existing hypothesis that male patients with thyroid cancer had worse prognosis.