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Etiology
| Etiological factors | Patients (%) | Etiological factors | Patients (%) |
| Web | 12 (16) | Anticardiolipin antibodies | 3 (4) |
| Hydatid disease | 8 (11) | Oral contraceptive use | 3 (4) |
| Behçet’ disease | 7 (9) | Tumor | 3 (4) |
| Protein C def. | 7 (9) | Anti-thrombin 3 def. | 2 (3) |
| Myeloproliferative disorder | 6 (8) | Lupus erythematosus | 1 (1) |
| Protein S def. | 5 (7) | Ulcerative colitis | 1 (1) |
| Pregnancy | 5 (7) | Paroxysmal nocturnal hemoglobinuria | 1 (1) |
| Activated protein C resistance | 3 (4) | Acute pancreatitis | 1 (1) |
