摘要
deep venous thrombosis frequently results in unilateral lower limb edema. a synovial cyst in the hip joint may be a rare cause of this symptom and should be considered in the differential diagnosis. we report on a case in which color-flow doppler ultrasonography showed presence of extrinsic compression of the external iliac vein. magnetic resonance imaging showed a synovial cyst as etiologic factor, confirmed by surgical excision.