Abstract
Seven patients had central airway obstruction of varied causes. The diagnosis was established early in some, but in others, because of either atypical clinical or physiological features or the lack of suspicion, the diagnosis was delayed. These cases emphasize that central airway obstruction may simulate asthma or chronic obstructive pulmonary disease and is not a rare clinical problem. Prime suspects are patients with dyspnea and wheezing without a well-defined cause.
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