Respiratory distress with normal chest roentgenograms.
D001984:Bronchial Neoplasms / Q000150:complications / Q000175:diagnosis / Q000000981:diagnostic imaging*; D001999:Bronchoscopy; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging*; D004417:Dyspnea / Q000000981:diagnostic imaging* / Q000209:etiology; D005471:Fluoroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging