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We report the case of a 43-years-old Turkish man with acquired deficiency of factor V (FV) diagnosed in a usual screening before a (recto) colonoscopy. In the biologic explorations, activated partial prothrombin time (APTT) was abnormally high and prothrombin time (PT) was low 18IU/dL with no anticoagulant drugs (the PT was normal 6 months ago). The controlled level of factor V was 3IU/dL with FV antibodies (9 Bethesda Units/mL). This patient had a previous history of primary sclerosing cholangitis (2000) and ulcero haemorrhagic rectocolitis (2002) and a fortuitous biological Biermer's disease was revealed. Corticosteroids were prescribed at 1mg/kg/day with decreasing during 6 months, patient had gradual regression of the caused bleeding and FV became greater than 90%, F V antibodies decreased to less than 0.7 Bethesda Units/mL. This case illustrates the presence of FV inhibitor in an autoimmune gastrointestinal context with regression of clinical (caused) signs and antibodies with corticosteroids., (Copyright © 2021 Société française de transfusion sanguine (SFTS). Published by Elsevier Masson SAS. All rights reserved.)

Risk management in the hospital, which is one of the referentiels of the ANAES accreditation manual, may be considered on two levels. Firstly, risk management may be approached globally, in the same way as it is tackled in the accreditation process. Secondly, risk management may be more definite. A specific risk chosen in accordance with the priorities of a particular plan may be dealt with individually. In this respect, the tranfusion process allows the risk management method to be tested and developed. f1