A previously healthy, 9-year-old boy presented with five recurrent episodes of left-sided chest pain with low-grade fever over the last 18 months. The pain usually lasted for few hours, was severe and consistent, and resolved spontaneously. It worsened during inspiration, physical activity, and swallowing. He did not experience any cough, dyspnea, chills, cold sweats, or weight loss. His medical and family history was unremarkable.
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