Which one of the following does not cause deep vein thrombosis: (A) Estrogen, (B) Thrombocytosis, (C) Venous stasis, (D) Sickle cell Anemia
Answer is D. Sickle cell anemia does not cause DVT. They cause vaso-occlusive crisis by plugging the microcirculation (aggregate of Sickle cell are formed in the capillaries because of hypoxia).