Left knee pain. Evaluate for left knee meniscus tear. MENISCI: There is bandlike increased signal intensity within the body and posterior horn of the medial meniscus indicating intrasubstance degeneration. Within the posterior horn, the signal abnormality extends to the tibial articular surface, indicating a horizontal tear. Mucoid material also extends through the periphery of the meniscus at the junction of the body and posterior horn, with formation of a small parameniscal cyst. The anterior horn of the medial meniscus appears intact. The lateral meniscus appears intact.ARTICULAR CARTILAGE AND BONE: I see no fluid-filled articular cartilage defects. Small lobulated foci of signal abnormality in the distal femoral metaphysis and proximal tibial metaphysis likely represent benign enchondromas.LIGAMENTS: The cruciate and collateral ligaments are intact. There is a tiny rounded focus of near fluid signal intensity adjacent to the distal fibers of the anterior cruciate ligament that may represent a small ganglion.EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
Degeneration and horizontal tear of the medial meniscus with other findings as described above.