title: Primary carcinoma of the trachea: physiologic diagnosis and review of the literature.
abstract: A patient with primary carcinoma of the trachea is described. The diagnosis was established physiologically by employing maximal expiratory flow-volume loops obtained while the patient was breathing air and a mixture of helium and oxygen.
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000175:diagnosis* / Q000503:physiopathology; D005260:Female; D005540:Forced Expiratory Flow Rates; D005541:Forced Expiratory Volume; D006801:Humans; D008449:Maximal Expiratory Flow-Volume Curves; D008875:Middle Aged; D014134:Tracheal Neoplasms / Q000175:diagnosis* / Q000503:physiopathology; D014797:Vital Capacity