Factors influencing the survival of patients with testicular teratoma.

The histology of 51 cases of testicular teratoma, with or without seminoma, was reviewed and classified according to the World Health Organization criteria. Full pathological and clinical details were obtained, and patients were followed up for periods varying from one to 10 years from orchidectomy. Multiple factors were studied in order to discover which affected prognosis. The pathological stage of the tumour proved to be the most important indicator. The previously described poor prognosis associated with yolk sac tumour was not confirmed.