This document appears to be a radiology report describing 20 patient cases. Each case includes 1-3 key findings or diagnoses related to the patient's knees, including tears in various parts of menisci or ligaments like the ACL, PCL, and MCL. Other findings included enchondromatosis, Langerhans cell histiocytosis, Osgood-Schlatter disease, Baker's cyst, tophi, cellulitis, hemangioma, and angiolipoma. The cases appear to focus on MRI imaging findings and diagnoses for various knee conditions and injuries.