title: Intrathoracic tracheal tumour presenting as asthma.
mesh_terms: D001249:Asthma / Q000175:diagnosis*; D003528:Carcinoma, Adenoid Cystic / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005540:Forced Expiratory Flow Rates; D006801:Humans; D008297:Male; D008875:Middle Aged; D014134:Tracheal Neoplasms / Q000175:diagnosis*; D014797:Vital Capacity