Healio.com/Pediatrics | 181Editor's note: Each month, this department features a discussion of an unusual diagnosis. A description and images are presented, followed by the diagnosis and an explanation of how the diagnosis was determined. As always, your comments are welcome via email at pedann@Healio.com.A n 11-year-old African-American boy with no significant medical history presented to the emergency department (ED) with a 1-week history of dry, non-productive cough associated with shortness of breath and headaches. No history of fevers, vomiting, diarrhea, throat or ear pain, or recent travel was noted. The