The Baker’s cyst or popliteal cyst is also known as a synovial cyst. It is a soft, fluid-filled lump in the popliteal fossa behind the knee. In the back of the knee, there is synovial tissue ...

Spinal stenosis may be due to a herniated disk, thickened ligament, synovial cysts, or injuries to ... in combination with imaging studies such as MRI or CT scans and, sometimes, by nerve ...