Ultrasound. An aid in the diagnosis of ectopic pregnancy.
D003937:Diagnosis, Differential; D005260:Female; D005831:Genital Diseases, Female / Q000175:diagnosis; D005865:Gestational Age; D006801:Humans; D008722:Methods; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000175:diagnosis* / Q000601:surgery; D014463:Ultrasonography