Yolk sac tumor is rare in adult. We report a case in a young man aged of 23
years treated by orchiectomy, chemotherapy and retroperitoneal lymphadenec
tomy. Diagnosis is based on pathology who shows other cellular contingents.
Treatment is based on orchiectomy and chemotherapy is indicated for residu
la masses. The prognosis is bad because metastasis is frequent. (C) 2001 Ed
itions scientifiques et medicales Elsevier SAS.