title: Interstitial pregnancy: pitfalls in ultrasound interpretation.
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000150:complications / Q000175:diagnosis*; D014463:Ultrasonography; D014597:Uterine Rupture / Q000209:etiology