title: Letter: Ultrasonography of ovarian masses.
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D010048:Ovarian Cysts / Q000175:diagnosis; D010051:Ovarian Neoplasms / Q000175:diagnosis*; D014465:Ultrasonics / Q000295:instrumentation; D014463:Ultrasonography