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Penn State College of Medicine, Penn State University, Hershey, Pennsylvania 17033, USA. tcraig@psu.edu
A 64-year-old male patient with a 15-year history of chronic obstructive pulmonary disease presented with an atypical rash that was refractory to standard therapy. Pulmonary function tests confirmed an obstructive lung disease. Basic laboratory workup revealed conflicting information, leading to a diagnostic challenge discussed in this article. Ultimately, careful testing did reveal the diagnosis and the patient was treated accordingly.
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