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The patient is a 16-year-old male who presents to urgent care with pain in the humerus area hours after finishing a baseball game.
View the x-ray taken and consider what your diagnosis and next steps would be. Resolution of the case is described on the next page.
![lytic diaphyseal lesion](https://www.jucm.com/wp-content/uploads/2022/09/10.2022-JUCM-Images-XR-Figure-1-2-600x417-1.jpg)
A 16-Year-Old Boy with Arm Pain After a Baseball Game
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