Image IQ Quiz: Pediatric Patient With Lower Extremity Pain and Lesion in Long Bone Metaphysis

A 12-year-old patient presents with mild localized pain in the lower extremity and an incidental finding on an X-ray showing a well-defined, radiolucent lesion in the long bone metaphysis. The patient has no history of trauma or systemic illness. What is the most likely diagnosis based on this clinical presentation and imaging findings?