12-year-old with history of left lower extremity pain and swelling LEFT KNEE:MENISCI: The medial and lateral menisci are normal.ARTICULAR CARTILAGE AND BONE: No focal articular cartilage thinning or tear identified. Bone marrow signal is normal. Fabella is noted.LIGAMENTS: The ACL, PCL, MCL, and LCL complex are intact. The popliteus muscle and tendon are intact. EXTENSOR MECHANISM: Slightly increased T2 signal at the proximal patellar tendon (series 8, image 12) is noted. The extensor mechanism is otherwise intact. The patella appears normal.ADDITIONAL
1.Myositis involving the left soleus muscle.2.Proximal patellar tendinitis without rupture.