title: Regional lung function in roentgenologically occult lung cancer.
mesh_terms: D000368:Aged; D001344:Autopsy; D002000:Bronchospirometry; D002277:Carcinoma / Q000175:diagnosis* / Q000473:pathology / Q000503:physiopathology; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis* / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D008168:Lung / Q000503:physiopathology*; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D010313:Partial Pressure; D011652:Pulmonary Circulation; D011868:Radioisotopes; D012119:Respiration; D013183:Sputum; D014692:Ventilation-Perfusion Ratio; D014978:Xenon
chemical_list: D011868:Radioisotopes; D014978:Xenon