Various forms of trophoblastic diseases were reported in the literature, including complete and partial hydatidiform moles, gestational choriocarcinomas, placental-site epitheloid tumors. Among patients who suffer from mole, neoplasia can be easily diagnosed by using levels human chorionic gonadotropin (hCG). Therefore, complex investigations are not usually necessary measuring hCG, physical ex...

Choriocarcinoma is a highly malignant tumor that can arise from trophoblasts of any type of gestational event but most often from complete hydatidiform mole. IGF-II plays a fundamental role in placental development and may play a role in gestational trophoblastic diseases. Several studies have shown that IGF-II is expressed at high levels in hydatidiform moles and choriocarcinoma tissues; howev...

AIMS To study the localisation of the endothelial nitric oxide synthase (eNOS) in the normal placenta, with special emphasis on the implantation site in the first trimester of pregnancy, and in the different subtypes of trophoblastic cells in gestational trophoblastic disease. METHODS The immunoperoxidase technique with an antibody directed against eNOS was applied to paraffin sections from f...

Hydatidiform mole (HM) is the product of an aberrant human pregnancy in which there is an abnormal embryonic development and proliferation of placental villi. The incidence of HM varies between ethnic groups, and occurs in 1 in every 1500 pregnancies in the USA. All HM cases are sporadic, except for extremely rare familial cases. The exact mechanisms leading to molar pregnancies are unknown. We...

Background: Prevalence of hydatidiform mole is not clearly defined, partly because most studies have reported different prevalence rates from different regions. However, there is no previous study that has determined the prevalence and associated risk factors of HM among patients with incomplete abortion evacuated at Bugando Medical Centre (BMC) and Sekou Toure Regional Hospital (STRH). Methods...

Six cases of hydatidiform mole associated with normal chorionic villi and a normal embryo/fetus (in five cases) were investigated with interphase cytogenetic and DNA cytometric analyses for diagnostic purposes. DNA probes specific for the pericentromeric regions of chromosomes 1 and X and for the long arm of chromosome Y were used. In four cases a dizygotic twin pregnancy could be proven. In th...

Gestational trophoblastic disease (GTD) is a group of conditions that originate from the abnormal hyperproliferation of trophoblastic cells, which derive from the trophectoderm, the outer layer of the blastocyst that would normally develop into the placenta during pregnancy. GTDs encompass hydatidiform mole (HM) (complete and partial), invasive mole, gestational choriocarcinoma, placental-site ...

Placental site trophoblastic tumor is a very rare variant of gestational trophoblastic disease which differs histologically and immunocytochemically from gestational choriocarcinoma. The English language literature includes only 74 reported cases. Seventeen patients have been managed at Charing Cross Hospital with this diagnosis. The median follow-up is 4.6 years, and the 5-year overall surviva...