卵黄囊瘤因其独特的组织结构和生物学习性,近年来得到临床医生和病理学者的重视,并认为卵黄囊瘤是一个独立的肿瘤单元。我们曾遇到3例兹报告并结合文献讨论如下: 病例报告 例1,刘××,男性,2岁,住院号1584。因右睾肿大1年,腹内包块1个月于1971年6月5日入院,近期内经常发热。检查T38.2℃,心肺正常,右下腹可及拳大肿块,质中等硬,固定,有压痛,腹水征(±)。右睾丸肿大如鹅卵大小,质硬,欠光滑,精索增粗,腹股沟淋巴结不肿大。入院后在全麻下经阴囊行右睾丸切 Yolk sac tumor because of its unique organizational structure and biological habits, in recent years by clinicians and pathologists attention, and that yolk sac tumor is an independent tumor unit. We have encountered three cases hereby report and the literature discussed the following: Case Report 1, Liu × ×, male, 2 years old, hospital number 1584. 1 year due to right dementia, abdominal mass 1 month in June 5, 1971 admission, the recent frequent fever. Check T38.2 ℃, normal heart and lung, right lower quadrant can reach the big boxing mass, medium hard, fixed, tenderness, signs of ascites (±). Right testicular enlargement, such as the size of a goose egg, hard, less smooth, spermatic cord thickening, inguinal lymph nodes is not swollen. After admission under general anesthesia right scrotum line of testicular incision