title: First-trimester serum levels of the beta-subunit of human chorionic gonadotropin in a tubal molar pregnancy.
abstract: A woman is described in whom the levels of the beta-subunit of human chorionic gonadotropin were rising in a pattern consistent with a tubal pregnancy. A tubal molar pregnancy was found. Thus an early ectopic molar pregnancy is not distinguishable from a nontrophoblastic tubal pregnancy on the basis of human chorionic gonadotropin levels.
mesh_terms: D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood*; D018997:Chorionic Gonadotropin, beta Subunit, Human; D005260:Female; D006801:Humans; D006828:Hydatidiform Mole / Q000097:blood*; D010446:Peptide Fragments / Q000097:blood*; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011274:Pregnancy, Tubal / Q000097:blood*; D014594:Uterine Neoplasms / Q000097:blood*
chemical_list: D006063:Chorionic Gonadotropin; D018997:Chorionic Gonadotropin, beta Subunit, Human; D010446:Peptide Fragments