Reason: 27yoM w/ Rt Knee swelling and pain, difficulty w/ ambulation. Exam notable for posterior fullness, c/f cyst, meniscal or tendon injury. History: Exam notable for posterior fullness, MENISCI: The medial and lateral meniscus appear intact.ARTICULAR CARTILAGE AND BONE: No full-thickness or near full-thickness articular cartilage defects are identified.LIGAMENTS: The cruciate and collateral ligaments appear intact. Lobulated foci of fluid signal intensity along the posterior aspect of the PCL may represent mucoid degeneration. There is nonspecific subcutaneous edema along the lateral aspect of the lateral collateral ligament proper and biceps femoris at the level of the conjoined tendon which may reflect a mild sprain injury in the correct clinical context. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Large Baker's cyst with findings suggestive of rupture or leakage as described above. Moderate size joint effusion.2. Nonspecific subcutaneous edema along the lateral aspect of the conjoined tendon may represent a mild sprain injury in the correct clinical context.