title: Decidual cast mimicking an intrauterine gestational sac and fetal pole in a patient with ectopic pregnancy. A case report.
abstract: In a case of ectopic pregnancy, ultrasound findings showed a pseudogestational sac in the uterus containing debris that mimicked a fetal pole. Ultrasonography done one week before had revealed no intrauterine gestational sac. The progression in one week of an "empty" uterus to a seven-week-sized intrauterine gestational sac with the appearance of a fetal pole without a heartbeat should suggest to the sonographer the possibility of a pseudosac and ectopic pregnancy.
mesh_terms: D000328:Adult; D003656:Decidua; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000175:diagnosis*; D014463:Ultrasonography