[Acute thrombotic and hemorragic complications in cancer]

Acute hemorragic and thrombotic complications in cancer are often life threatening. Hemorragic disease are frequent (10%) and sometimes revealed the cancer. In more than 50% thrombocytopenia is involved. Bleeding is related to a vessel wound in 30% of the hemorragic complications either by a tumoral diffusion or by the tumor itself. In less than 10%, the bleeding is linked to disseminated intravascular coagulation. Very rarely coagulation factor deficit is found. Thrombotic manifestations are also frequent (15% of cancer patients). Venous system are usually involved. Clinicians must be aware of these complications to favor the best treatment early as possible to prevent fatal complications.