title: Tubal pregnancy with normal hysterosalpingogram and negative serum pregnancy test.
abstract: A patient undergoing evaluation for primary infertility with regular menses had a normal hysterosalpingogram in the follicular phase and underwent diagnostic laparoscopy the next day, with the finding of a tubal pregnancy. The patient had a negative serum pregnancy test. Although a normal hysterosalpingogram and negative serum pregnancy test are each rare with a tubal pregnancy, the combination of the two occurring in a tubal pregnancy is previously unreported and did not exclude the diagnosis in this case.
authors.affiliation: Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, Texas.
authors.forename: M A
authors.initials: MA
authors.lastname: Uribe
authors.forename: R C
authors.initials: RC
authors.lastname: Dunn
authors.forename: V C
authors.initials: VC
authors.lastname: Buttram
mesh_terms: D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood; D005188:False Negative Reactions; D005260:Female; D006801:Humans; D007047:Hysterosalpingography; D011247:Pregnancy; D011259:Pregnancy Tests, Immunologic; D011274:Pregnancy, Tubal / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011863:Radioimmunoassay
chemical_list: D006063:Chorionic Gonadotropin