Simultaneous intrahepatic and subgaleal hemorrhage in antiphospholipid syndrome following anticoagulation therapy

Warfarin is a widely used anticoagulant.Interindividual differences in drug response,a narrow therapeutic range and the risk of bleeding render warfarin difficult to use clinically.An 18-year-old woman with antiphospholipid syndrome received long-term warfarin therapy for a recurrent deep vein thrombosis.Six years later,she developed right flank pain.We diagnosed intrahepatic and subgaleal hemorrhages secondary to anticoagulation therapy.After stopping oral anticoagulation,a follow-up computed tomography showed improvement in the hemorrhage.After restarting warfarin because of a recurrent thrombosis,the intrahepatic hemorrhage recurred.We decided to start clopidogrel and hydroxychloroquine instead of warfarin.The patient has not developed further recurrent thrombotic or bleeding episodes.Intrahepatic hemorrhage is a very rare complication of warfarin,and our patient experienced intrahepatic and subgaleal hemorrhage although she did not have any risk factors for bleeding or instability of the international normalized ratio control.