title: Gallstones simulating polyps sonographically: a report of two cases.
mesh_terms: D002769:Cholelithiasis / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D005706:Gallbladder Neoplasms / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011127:Polyps / Q000175:diagnosis*; D014463:Ultrasonography