To the Editor: The clinicians involved in Case 49-1993 (Dec. 9 issue),1 which describes a patient with chronic pulmonary disease that started in infancy, do a disservice to pediatricians in not remembering that common things are common. The patient had chronic respiratory disease and failure to thrive, with progression to bronchiectasis and pulmonary failure. I realize that the clinicopathological exercises are intended to stretch our minds, but they should also teach us to think logically. The diagnosis of cystic fibrosis appears nowhere in the Case Record.1 Although there were findings that militated against this diagnosis, it at least deserved to.
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