semimembranosus insertional cyst

MRI

characteristics of cysts and “cyst-like” lesions in and around the knee: what the radiologist needs to know. Semimembranosus insertional cyst. The coronal (a), sagittal (b) and axial (c) fat saturated proton density weighted images show an intraosseous cyst (white arrows) located at the semimembranosus insertion. Semimembranosus tendon is shown with a black arrow. Findings of ACL reconstruction are also visible