title: Lung abscess mimicking empyema on ultrasonography.
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D004653:Empyema / Q000175:diagnosis* / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008169:Lung Abscess / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008297:Male; D011859:Radiography; D014463:Ultrasonography