title: Ultrasound diagnosis of upper abdominal mass.
mesh_terms: D000005:Abdomen; D000008:Abdominal Neoplasms / Q000175:diagnosis; D000293:Adolescent; D001660:Biliary Tract Diseases / Q000175:diagnosis*; D003135:Common Bile Duct; D003560:Cysts / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D014463:Ultrasonography