An eccentric, multiloculated lesion with a narrow zone of transition in the medial aspect of proximal metaphysis of the tibia, returning intermediate signal intensity on T1, high signal intensity on T2/ STIR with a low-intensity rim. It is measuring approximately 3x1.2x1cm in CC, AP and TR diameter. No periosteal reaction is noted. No adjacent soft tissue component is noted. Mild knee joint effusion is seen.