A Synovial Cyst Originating from the Hip Joint as a Rare Cause of Recurrent Femoral Vein Thrombosis: Case Report and Literature Review.

Thrombosis of the femoral vein may be caused by external obstruction. A 48-year-old female patient presented with leg swelling and a history of recurrent femoral venous thrombosis caused by a ganglion originating from the left hip joint. A computer tomography-guided puncture had also been performed, which was followed by rapid refilling of the cyst. Thereafter, the femoral vein was decompressed, and the ganglion was resected. Pathology confirmed a synovial cyst. After an uneventful stay, the patient was discharged on oral anticoagulation. Follow-up showed no further compression of the femoral vein. This case report describes a rare case of recurrent femoral venous thrombosis caused by a synovial cyst.