目的Rausch and Schiller(1954)在美国阿拉斯加白令海峡St.Lawrence岛从北极狐(Alopex lagopus)和雪撬狗(sledge dogs)发现西伯利亚棘球绦虫新种(Echinococcus sibiricensis sp.nov.),但诸多学者认为E.sibiricensis Rausch et Schiller,...目的Rausch and Schiller(1954)在美国阿拉斯加白令海峡St.Lawrence岛从北极狐(Alopex lagopus)和雪撬狗(sledge dogs)发现西伯利亚棘球绦虫新种(Echinococcus sibiricensis sp.nov.),但诸多学者认为E.sibiricensis Rausch et Schiller,1954是欧洲的多房棘球绦虫(Echinococcus multilocularis Leuckart,1863)的地理株(或亚种)(Vogel,1957;Skrjabin and Abuladze,1964;Kumaratilake and Thompson,1982;Meyajaki,1991等)。于1985-2002年间,作者在我国内蒙古大兴安岭北麓草场多年进行泡状棘球蚴(alveolar Echinococcus)病原的野外调查和实验室鼠类的人工感染试验,结果发现该地区同地点存在有北美西伯利亚棘球绦虫、欧洲多房棘球绦虫及苏俄多房棘球绦虫三种不同"地理株",而且三种成虫常混合感染于同一终宿主沙狐(Vulpes corsac)的体内,它们的幼虫期也存在于当地的布氏田鼠(Microtus brandti)。2001年,作者再次检查当地沙狐151只,从中检出19只感染有泡状棘球绦虫成虫。含成熟虫体的13只阳性沙狐中,感染西伯利亚棘球绦虫有11只,其中2只单独感染此虫种,另9只还混合感染了欧洲多房棘球绦虫及苏俄多房棘球绦虫三虫种。在呼伦贝尔草原的泡状棘球蚴病原中,西伯利亚棘球绦虫是优势种,它在终宿主沙狐和中间宿主的感染率都高过其他虫种。本文着重介绍西伯利亚棘球绦虫的成虫子宫结构和它幼虫期在野外布氏田鼠及人工感染实验鼠体内的发育情况。展开更多
Yolk sac tumors of the ovary are rare entities that account for 2% - 5% of all ovarian tumors. They represent the second most common histological variant of malignant germ cell tumors of the ovary after dysgerminomas....Yolk sac tumors of the ovary are rare entities that account for 2% - 5% of all ovarian tumors. They represent the second most common histological variant of malignant germ cell tumors of the ovary after dysgerminomas. Yolk sac tumors are most commonly encountered in women in the second and third decades. Microscopically, they are highly polymorphic and can present in a pure form or associated with another contingent of germ cell tumor. We report the case of a 26-year-old woman, who underwent surgery for a large right ovarian tumor rupturing into the peritoneal cavity. The ovarian tumor was revealed by ascites of great abundance and abdomino-pelvic pain. On histological examination, the diagnosis of yolk sac tumor in its pure and polyvesicular vitelline pattern was made. Through this observation, we propose to discuss the anatomoclinical particularities of these tumors by emphasizing the importance of histology for the diagnosis as well as the need of an early and appropriate management.展开更多
文摘目的Rausch and Schiller(1954)在美国阿拉斯加白令海峡St.Lawrence岛从北极狐(Alopex lagopus)和雪撬狗(sledge dogs)发现西伯利亚棘球绦虫新种(Echinococcus sibiricensis sp.nov.),但诸多学者认为E.sibiricensis Rausch et Schiller,1954是欧洲的多房棘球绦虫(Echinococcus multilocularis Leuckart,1863)的地理株(或亚种)(Vogel,1957;Skrjabin and Abuladze,1964;Kumaratilake and Thompson,1982;Meyajaki,1991等)。于1985-2002年间,作者在我国内蒙古大兴安岭北麓草场多年进行泡状棘球蚴(alveolar Echinococcus)病原的野外调查和实验室鼠类的人工感染试验,结果发现该地区同地点存在有北美西伯利亚棘球绦虫、欧洲多房棘球绦虫及苏俄多房棘球绦虫三种不同"地理株",而且三种成虫常混合感染于同一终宿主沙狐(Vulpes corsac)的体内,它们的幼虫期也存在于当地的布氏田鼠(Microtus brandti)。2001年,作者再次检查当地沙狐151只,从中检出19只感染有泡状棘球绦虫成虫。含成熟虫体的13只阳性沙狐中,感染西伯利亚棘球绦虫有11只,其中2只单独感染此虫种,另9只还混合感染了欧洲多房棘球绦虫及苏俄多房棘球绦虫三虫种。在呼伦贝尔草原的泡状棘球蚴病原中,西伯利亚棘球绦虫是优势种,它在终宿主沙狐和中间宿主的感染率都高过其他虫种。本文着重介绍西伯利亚棘球绦虫的成虫子宫结构和它幼虫期在野外布氏田鼠及人工感染实验鼠体内的发育情况。
文摘Yolk sac tumors of the ovary are rare entities that account for 2% - 5% of all ovarian tumors. They represent the second most common histological variant of malignant germ cell tumors of the ovary after dysgerminomas. Yolk sac tumors are most commonly encountered in women in the second and third decades. Microscopically, they are highly polymorphic and can present in a pure form or associated with another contingent of germ cell tumor. We report the case of a 26-year-old woman, who underwent surgery for a large right ovarian tumor rupturing into the peritoneal cavity. The ovarian tumor was revealed by ascites of great abundance and abdomino-pelvic pain. On histological examination, the diagnosis of yolk sac tumor in its pure and polyvesicular vitelline pattern was made. Through this observation, we propose to discuss the anatomoclinical particularities of these tumors by emphasizing the importance of histology for the diagnosis as well as the need of an early and appropriate management.
