J Asthma Allergy Clin Immunol.
1999 Feb;19(1):103-109.
Two cases of upper airway obstruction masquerading as asthma: One tracheal adenoid
cystic carcinoma, the other foreign body aspiration
Abstract
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Reversible airway obstruction and wheezing are typical features of bronchial asthma,
but these features may also be observed in other conditions. However, the inclusion
of these conditions in the differential diagnosis of asthma-like symptoms in adults
is often neglected, resulting in a correct diagnosis being made after months of
unsuccessful treatment for asthma. We report two cases of an upper airway obstruction
masquerading as asthma. In case one, adenoid cystic carcinoma was identified in the
trachea of a patient showing asthma-like symptoms, positive response to allergic
skin test and methacholine inhalation challenge. In the other case, aspirated foreign
body was misdiagnosed and treated as asthma for more than one year. A high degree of
suspicion and a thorough medical evaluation censisting of history, physical examination
and pulmonary function test including shapes of spirogram are essential to the
differential diagnosis of asthma-like symptoms