Cases reported "Endodermal Sinus Tumor"

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1/5. Sustained complete remission in a patient with platinum-resistant ovarian yolk sac tumor.

    BACKGROUND: yolk sac tumors of the ovary are generally very responsive to chemotherapy; however, they are difficult to manage in the setting of platinum resistance where treatment options are limited and outcomes are poorer. CASE: We present a 39-year-old woman who had a platinum-resistant yolk sac ovarian tumor. She achieved complete remission on an innovative regimen of docetaxel, gemcitabine, and thalidomide. CONCLUSION: The combination of docetaxel, gemcitabine, and thalidomide might be an active regimen for platinum-resistant ovarian nondysgerminomas and further investigation of this combination is warranted.
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ranking = 1
keywords = dysgerminoma
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2/5. Swyer syndrome: an unusual presentation.

    We report a 27-year-old XY female who presented with abdominal pain due to hemoperitoneum from a ruptured abdominal mass. gonadoblastoma overgrown by endodermal sinus tumor and dysgerminoma was detected. The risk of neoplasia in such cases is discussed.
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ranking = 1
keywords = dysgerminoma
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3/5. gonadoblastoma with dysgerminoma in one ovary and gonadoblastoma with dysgerminoma and yolk sac tumor in the contralateral ovary in a girl with 46XX karyotype.

    A case of gonadoblastoma with dysgerminoma in the left ovary and gonadoblastoma with dysgerminoma and yolk sac tumor in the right of a 10-year-old girl is reported. Her karyotype was 46XX, normal female type. A case of a gonadoblastoma without a y chromosome is very rare. Furthermore, the prognosis for gonadoblastoma accompanied by germ cell tumors other than dysgerminoma was very poor in the past, but the patient remains well 25 months after the first operation.
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ranking = 11
keywords = dysgerminoma
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4/5. Transformation of ovarian dysgerminoma to yolk sac tumor: evidence for a histogenetic continuum.

    dysgerminoma has traditionally been considered an end-stage neoplasm without potential for further differentiation. Although there have been several reports of transformation of testicular seminoma to yolk sac tumor, a similar event has not been previously reported in dysgerminoma of the ovary. Three cases of ovarian germ cell tumor (two pure dysgerminomas and one mixed germ cell tumor with dysgerminoma and yolk sac components) that revealed histologic changes compatible with early transformation to yolk sac tumor are described. In general, the areas of transformation were located at the periphery of the tumor lobules which otherwise had features of typical dysgerminoma. They were characterized by the presence of microcysts and small glandular structures, which though not readily identified on H&E became more evident with stains for keratins, alpha-fetoprotein, and blood group-related antigen. The small size and focal nature of change, and the apparent transition favor the interpretation that this change represents transformation rather than admixture of two germ cell components. The relationship of dysgerminoma to the solid variant of yolk sac tumor is discussed and an alternate histogenetic scheme in which dysgerminoma represents the stage of earliest differentiation from which other non dysgerminomatous tumors may arise is presented. Although previously proposed for testicular germ cell neoplasia, this scheme has not yet been applied to their ovarian counterparts.
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ranking = 11
keywords = dysgerminoma
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5/5. Ovarian mixed germ cell tumor composed of dysgerminoma, endodermal sinus tumor, choriocarcinoma and mature teratoma in a 44-year-old woman: case report and literature review.

    A case of ovarian mixed germ cell tumor in a 44-year-old woman was examined. The tumor was well circumscribed, measured 15 x 11 x 10 cm and appeared solid and partly cystic on the cut surface. light microscopic examinations revealed that the tumor was composed of four different neoplastic germ cell elements, intermingled with each other. They are: (i) choriocarcinoma, immunohistochemically positive for human placental lactogen (hPL) and human chorionic gonadotropin (hCG); (ii) dysgerminoma, positive for placental alkaline phosphatase; (iii) endodermal sinus tumor positive for alpha-fetoprotein (AFP); and (iv) mature teratoma. Among these histological types, dysgerminoma occupied more than 50% of the neoplasm. The patient was diagnosed as a stage la ovarian mixed germ cell tumor and was subsequently treated with chemotherapy. A second-look laparotomy after completion of chemotherapy revealed no residual tumors in the abdomen and the patient is alive and well 15 months after operation. This is the fourth reported case of ovarian mixed germ cell tumor arising in patients over 40 years old.
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ranking = 6
keywords = dysgerminoma
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