Figure 3
From: Wear debris pseudotumor following total knee arthroplasty: a case report
(A) A sagittal T1-weighted magnetic resonance image of the right knee shows a low signal lesion with a maximal diameter of 8 cm at the origin of the medial head of the gastrocnemius muscle. (B) A sagittal T2-weighted magnetic resonance image shows a high signal fluid-filled lesion with inner septums and thin outer wall. (C) A transverse T2-weighted magnetic resonance image shows a cystic fluid-filled lesion at the postero-medial aspect of the knee joint.