Wheezing as the sole clinical manifestation of cor triatriatum.

Cardiac malformations involving low-pressure chambers (i.e., either of the atria) are more often diagnosed later in life than lesions that involve high-pressure systems such as ventricular septal defects or persistent ducti arteriosi. Patients with congenital heart disease involving the atria may present only symptoms suggesting lung disease. We report on a child with recurrent episodes of wheezing, which did not respond to albuterol nebulizations and intravenous corticosteroids; he was subsequently found to have cor triatriatum. When a patient suffers from recurrent episodes of lower pulmonary infection and wheezing, despite appropriate management for asthma, less common (including cardiac) causes should be considered.