摘要：

A 64 years-old female came to the out-patient clinic because of chronic cough and wheezing. As she could recall, the cough had begun suddenly during a meal, about a month ago. She had a history of bronchial asthma that was well-controlled until then by inhaled long acting bronchodilators, inhaled corticosteroids and montelukast. She and her doctor thought that it was again another asthma exacerbation, but this time her symptoms persisted despite her adherence to the usual treatment scheme plus a short course of oral corticosteroids.

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