In medical @entity1 , risk factors of leg @entity49 are not well evaluated. @entity5 is considered as an important one. The aim of this study was to evaluate the role of intrinsic @entity715 risk ( @entity5 ) and external @entity715 risk (associate factors). We have made a prospective analysis of @entity715 venous risk factors in two medical populations with leg @entity49 : @entity1 with @entity5 and @entity1 without @entity5 . Risk of @entity715 depends on the thrombogenic importance of the risk factor and its chronicity or not. We assessed @entity5 and @entity1031 at the time of diagnosis and during a median follow up of 125.2 days. We included 31 consecutive cases of @entity5 (21 @entity1 , 10 @entity1 , mean age 63.8 years), and 50 consecutive cases of non @entity5 @entity1 (32 @entity1 , 18 @entity1 , mean age 65.5 years), these two populations were not different. The classic risk factors of @entity49 were not frequent in @entity5 @entity1 . Analysis of @entity715 risk showed that 61% of @entity5 @entity1 group had @entity49 without classic @entity715 risk, as compared to 32% in non @entity5 @entity1 group, showing the direct role of @entity5 in @entity715 (p < 0.01). The @entity5 was often aggressive and metastatic @entity420 of various origins. The effect of chemotherapy is not clear, only hormonotherapy seemed to be responsible in two cases. @entity5 , defined by clinical characteristics, is a real risk factor of @entity49 but of low frequency. Indeed, the incidence of @entity49 in oncologic unit is rare (0.4%). Finally, @entity1031 in @entity5 @entity1 is not different than in no @entity5 @entity1 , @entity19634 is unfrequent. Prognosis is poor (40% death with 44.5 days of median survival), and antithrombotic therapy complications are frequent (bleeding 16%, oral anticoagulants resistance 20%).

[ XXXX . Evaluation of risk factors of @entity49 in the medical environment].

@entity1 :: ('9606', 'Species') :: ['women', 'patients', 'patient', 'men'] @entity5 :: ('MESH:D009369', 'Disease') :: ['cancer', 'tumor hypercoagulable state', 'Cancer', 'Cancer hypercoagulability'] @entity49 :: ('MESH:D019851', 'Disease') :: ['venous thrombosis'] @entity19634 :: ('MESH:D054868', 'Disease') :: ["Trousseau's syndrome"] @entity1031 :: ('MESH:D013923', 'Disease') :: ['thromboembolic disease'] @entity715 :: ('MESH:D013927', 'Disease') :: ['thrombosis', 'thrombotic'] @entity420 :: ('MESH:D000230', 'Disease') :: ['adenocarcinoma']
@entity49 :: (MESH:D019851,Disease) :: ['Venous thrombosis of the legs and cancer']
