title: Use of 5.0 MHz transducer in the evaluation of pleural masses.
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis; D000293:Adolescent; D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis; D004653:Empyema / Q000175:diagnosis; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010996:Pleural Effusion / Q000175:diagnosis* / Q000209:etiology; D010997:Pleural Neoplasms / Q000175:diagnosis; D014463:Ultrasonography