Hemorrhagic venous infarction and endovascular therapy. A, Head CT at presentation showing the large right temporal venous infarct with hemorrhagic conversion and mass effect. B, Magnetic resonance venogram (MRV) showing thrombosis of the right transverse and sigmoid sinus. C, Interventional angiogram with catheter in the right transverse sinus, status post thrombolysis and balloon angioplasty, and resolution of the thrombus.