Synchronous bilateral primary germ cell tumors of the testis: A case report and review of the literature

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Abstract
Synchronous bilateral primary germ cell tumors of the testis are exceedingly rare. The most common synchronous testicular tumors are seminomas, followed by embryonal carcinomas, teratocarcinomas, and choriocarcinomas. In a series of 385 patients we found nine with bilateral primary germ cell tumors of the testis (2.3%), including one with synchronous involvement of both testes. The treatment of synchronous bilateral primary germ cell tumors of the testis is in principle the same as that of solitary testicular primary germ cell tumors, and is based on tumor histology and tumor metastasis.