The duplex scanner and color Doppler examination confirmed in all subjects the presence of an intrafascial hematoma in the gemellar zone; in 10 cases (41.7%), with more painful symptomatology, in a zone contiguous to the hemorrhage, we found a gemellar (six cases) or popliteal (four cases) phlebothrombosis. Lastly, we must point out that the syndrome is not always benign and that, therefore, a correct and more vigilant diagnostic and therapeutic approach is necessary.