睾丸卵黄囊瘤(Yolk sac tumor)是恶性度高的肿瘤,好发于3岁以下儿童,预后差,临床上罕见。近年来本院发现二例,现报告如下: 例1,男性1岁,发现左腹股沟肿物4天,于86年3月13日入院。体检:左腹股沟触及一约3×2×2.5cm大小的肿物,质中,活动良好。同侧阴囊未触及睾丸,右侧睾丸正常。临床诊断:左隐睾(睾丸肿瘤)。3月17日查火箭胎甲500μg/L,3月19日行“左睾丸根治切除术”,术中探查发现:左侧睾丸约3×2.5cm大小,表面光滑,质 Yolk sac tumor is a malignant tumor that occurs in children under 3 years of age with poor prognosis and is clinically rare. In recent years, two cases were found in our hospital, the report is as follows: Example 1, male 1 year old, found the left groin tumor for 4 days, was admitted on March 13, Physical examination: The left groin touched a mass of about 3 × 2 × 2.5 cm in size and was well-nourished. Ipsilateral scrotum did not touch the testes, right testes normal. Clinical diagnosis: left cryptorchidism (testicular tumor). March 17 to check the rocket A 500μg / L, March 19 line “left testicle radical excision” intraoperative exploration found: the left testis about 3 × 2.5cm size, smooth surface, quality