Venous involvement (%)
| Deep vein thrombosis | 142 (80.7) |
| Budd-Chiari syndrome | 7 (4.0) |
| Inferior and superior vena cava syndrome | 26 (14.7) |
| Iliac vein thrombosis | 18 (10.2) |
| Safenous vein thrombosis | 23 (13.1) |
| Femoral vein thrombosis | 36 (20.5) |
| Popliteal vein thrombosis | 43 (24.4) |
| Crural vein thrombosis | 12 (6.8) |
| Cerebral sinus thrombosis | 20 (12,2) |