_:vb50952101 . _:vb50952101 . _:vb50952101 "url:https://www.ncbi.nlm.nih.gov/pubmed/14614893"^^ . _:vb50952101 "A choriocarcinoma that is characterized by low beta-hCG levels and arises from neoplastic transformation of intermediate trophoblastic cells."^^ . _:vb50952101 . _:vb50952101 . _:vb50952101 .