The phenomenon of "burned-out" in an extragonadal germ cell tumor is characterized by regression of testicular tumor. This condition is rare and particular. We report the case of a 52-year-old male with left flank pain that radiated to external genitalia. Physical examination showed a painless and hard mass in the left flank; also a mass in left testicle. Abdominal computed tomography revealed an isodense and homogeneous mass located in retroperitoneal area below the left renal artery and above the common iliac artery. Histological analysis of tumor retroperitoneal reported a germinoma; while testicular atrophy and fibrosis was identified. These types of tumors are surgically treated with chemotherapy and / or radiotherapy and the prognosis is good.
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