A 14-year-old boy presents to your clinic for right knee pain and abnormal Xrays obtained by his pediatrician. His mother brought him in for worsening right knee pain without a history of trauma. The pain is severe enough that he now has a noticeable limp. On questioning, he states the pain is diffuse about his knee. Additionally, he endorses night pain and minimal relief with anti-inflammatory medications. You obtain an xray and MRI studies to further evaluate the lesion. These are shown in figures A-D. Additionally, you obtain a biopsy for pathologic review shown in figure E. What is the correct pairing of diagnosis and treatment for this patient?