Variable intrathoracic airways obstruction masquerading as asthma.
D000293:Adolescent; D000402:Airway Obstruction / Q000175:diagnosis*; D001249:Asthma / Q000175:diagnosis*; D001984:Bronchial Neoplasms / Q000175:diagnosis; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D012129:Respiratory Function Tests