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Membranous Budd–Chiari syndrome in a well-anticoagulated patient

We describe an unusual case of a 54-year-old woman who was diagnosed with a subacute Budd–Chiari syndrome due to membranous venous obstruction in the inferior vena cava. The unusual feature of this case was that she had been diagnosed with pulmonary emboli a few years earlier and was on lifelong warfarin with a therapeutic international normalised ratio. She was effectively treated by venoplasty.