Superficial siderosis associated with an iatrogenic posterior fossa dural leak identified on CT cisternography

Ajay A. Madhavan, Christopher P. Wood, Allen J. Aksamit, Kara M. Schwartz, John L. Atkinson, Neeraj Kumar

Research output: Contribution to journalArticlepeer-review


Superficial siderosis refers to hemosiderin deposition along the pial surface of the brain and spinal cord. It results from chronic and repetitive low-grade bleeding into the subarachnoid space. Dural tears are a common cause of superficial siderosis. Although such tears typically occur in the spine, dural tears can also occur in the posterior fossa. In many cases, posterior fossa dural tears are iatrogenic, and patients may present with neuroimaging evidence of postoperative pseudomeningoceles. We present a case of superficial siderosis caused by a persistent posterior fossa dural leak. The patient presented with superficial siderosis 30 years after a Chiari I malformation repair. A pinhole-sized dural tear was identified preoperatively using computed tomography cisternography. The dural defect was successfully repaired. An additional small tear that was not seen on imaging was also identified at surgery and successfully repaired.

Original languageEnglish (US)
Pages (from-to)403-407
Number of pages5
JournalNeuroradiology Journal
Issue number3
StatePublished - Jun 2022


  • CT cisternography
  • Superficial siderosis
  • dural defect
  • posterior fossa surgery
  • pseudomeningocele

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology


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