目的：探讨心脏卵黄囊瘤临床病理特征。
Purpose To study the clinicopathological features of yolk sac tumor (YST) of the heart.
卵黄囊瘤很少涉及心包。
比较典型的卵黄囊瘤。
目的：探讨CT在性腺外卵黄囊瘤的临床应用价值。
Objective: To explore CT image of yolk sac tumor out of gonad.
方法：回顾分析6例经病理证实的性腺外卵黄囊瘤的临床及CT影像表现。
Methods: Retrospectively analyzed clinical manifestation and ct image of yolk sac tumor out of gonad in 6 cases.
目的：探讨监测血清afp对小儿肝母细胞瘤和卵黄囊瘤诊断和预后的意义。
Aim: to investigate the diagnosis and predication value of serum AFP in infants with hepatoblastoma and yolk-sac tumors.
结果：肝母细胞瘤和卵黄囊瘤术前血清AFP阳性率分别为85％，93％。
Results: AFP was significantly increased in 85% patients with hepatoblastoma and 93% patients with yolk-sac tumors.
胚胎癌35例，畸胎瘤11例，卵黄囊瘤3例，绒毛膜上皮癌6例，混合性生殖细胞瘤13例。
There were 35 embryonal carcinomas, 11 teratomas, 3 yolk sac tumors, 6 choriocarcinomas and 13 mixed germ cell tumors.
结论全反式维甲酸可以抑制睾丸卵黄囊瘤细胞的增殖，抑制肿瘤增殖机制可能与下调VEGF的表达有关。
ConclusionATRA could inhibit proliferation of yolk sac tumor cell line, and down regulation of VEGF could be the inhibitory mechanism of ATRA on yolk sac tumor cell line in vitro.
材料和方法：对35例经手术病理证实的骶尾部畸胎瘤和卵黄囊瘤的CT和MRI检查资料进行回顾性分析。
Materials and Method: ct and MRI examinations of 35 children with sacrococcygeal germ cell tumors proved by surgery and pathology were reviewed, retrospectively.
结果研究对象中，20例为未成熟畸胎瘤，11例为卵黄囊瘤，8例为无性细胞瘤，6例为混合性生殖细胞肿瘤。
Result To study patients, 20 immature teratoma (IT), 11 endodermal sinus tumor, 8 dysgerminoma, 6 mixed germ cell tumors.
目的：儿童恶性生殖细胞肿瘤的发病率是百万分之二到三，卵黄囊瘤是其中最常见的儿童恶性生殖细胞肿瘤，约占62.7%。
Objective: malignant germ cell tumors occur in childhood at a rate of 2 to 3 cases per million children, and Yolk sac tumor accounts for the most (62.7%) of malignant germ cell tumors.
目的：儿童恶性生殖细胞肿瘤的发病率是百万分之二到三，卵黄囊瘤是其中最常见的儿童恶性生殖细胞肿瘤，约占62.7%。
Objective: malignant germ cell tumors occur in childhood at a rate of 2 to 3 cases per million children, and Yolk sac tumor accounts for the most (62.7%) of malignant germ cell tumors.
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