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.