 - Ongoing or recent use of aspirin during 10 days before the first administration of bevacizumab 325 mgday or use of another platelet aggregation inhibitor dipyridamole, ticlopidine, clopidogrel 75 mgday, or ongoing or recent use of a therapeutic dose during 10 days before the first administration of bevacizumab of anticoagulant or thrombolytic drugs per os or in parenteral injection. Prophylactic use of anticoagulant drug is allowed 