Ganglion Cyst of Quadriceps Tendon- A Rare Cause on Anterior Knee Pain.

A rare case of ganglion cyst of quadriceps tendon is described here. A 19-year-old male presented with left anterior knee pain of two weeks duration . The patient gave a history of trauma to the left knee joint while a wrestling match six months ago. Physical examination revealed focal tenderness just above the superior pole of patella without any obvious swelling. Magnetic resonance imaging showed a small cystic lesion within the quadriceps tendon just proximal to the superior pole of patella. Intraoperatively, the excised cystic lesion was found to be filled with gelatinous and viscous fluid. The lesion was confirmed as a ganglion cyst on histopathologic examination.