title: Ultrasonographic diagnosis of cervical ectopic pregnancy.
mesh_terms: D000022:Abortion, Spontaneous / Q000175:diagnosis; D000328:Adult; D002584:Cervix Uteri; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D010923:Placenta Previa / Q000175:diagnosis; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000175:diagnosis*; D014463:Ultrasonography; D014594:Uterine Neoplasms / Q000175:diagnosis