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Dural sinus venous thrombosis

MR venography in this patient with papilledema and sixth nerve palsy demonstrates reduced flow in the right sigmoid sinus and jugular vein (A and B, arrows) due to mastoiditis (C, arrow) with acute clot visible in the sinus (C, dotted arrow). (Contributed by Dr. Sashank Prasad.)

Associated Disorders

  • Bilateral disc edema
  • Idiopathic intracranial hypertension