Source:http://linkedlifedata.com/resource/umls/id/C0206666
MSH: An uncommon variant of CHORIOCARCINOMA. It is composed almost entirely of mononuclear cytotrophoblasts (TROPHOBLASTS). Because its secretion of hCG (CHORIONIC GONADOTROPIN) is low, a large tumor may develop before the hCG can be detected.,NCI: A rare gestational trophoblastic tumor characterized by the presence of a diffuse cellular infiltrate composed of intermediate trophoblasts and cytotrophoblasts and by the absense of a significant population of syncytiotrophoblasts.