[Extragonadal germ cell tumor: A case report and review of the literature].

For patients with a history of cryptorchidism and tumors located in the central axis, special attention should be paid to physical examination of the testes, testicular ultrasonography, and determination of AFP and other indicators to identify gonadal tumor metastasis. And if so, radiotherapy and chemotherapy can be considered first to reduce surgical complications and achieve accurate management.