<prompt> Thromboembolism after pelvic surgery is usually from the veins -iliacCalfFemoralPelvic  <response>: MC site of DVT: Calf veins soleal veins MC site thrombosis for pulmonary thromboembolism: Femoropopliteal veins Calf veins are the most common site of DVT in post-operative period, but risk of embolism from calf venous thrombosis is extremely low. DVT of femoropopliteal veins are the most common site of pulmonary thromboembolism. 