AFP and yolk sac tumor: (AFP), α-fetoprotein; (BEP), bleomycin, etoposide and cisplatin; (B-HCG), human chorionic gonadotropin subunit beta; (CH), choriocarcinoma; (EC), embryonal carcinoma; (ICM), intracranial metastasis; (LDH), lactate dehydrogenase; (miRs), microRNAs; (NS), non-seminoma; (RPLN), retroperitoneal lymph node; (RPLND), retroperitoneal lymph node dissection; (TE), teratoma; (TGCC), testicular germ cell cancer; (VIP), vinblastine, ifosfamide and cisplatin; (YST), yolk sac tumor.