Pathological risk factors for higher clinical stage in testicular seminomas.

Tumour size and vascular invasion are the strongest predictors of higher clinical stage in testicular seminomas. Our univariate data suggest that rete testis and hilar soft tissue invasion relate to higher clinical stage. However, neither of these factors were found to be independent risk factors at multivariate analysis. Therefore, this study supports tumour upstaging based only upon size and vascular invasion.