Incidental giant arachnoid granulation

P. Kan, E. A. Stevens, William T. Couldwell

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40 Scopus citations


Arachnoid granulations may expand the durai sinuses or inner table of the skull. Although usually incidental, giant arachnoid granulations that are of sufficient size to fill the lumen of a durai sinus and cause local dilation or filling defects can rarely cause symptoms due to sinus obstruction leading to venous hypertension. This 31-year-old man presented with a 3-month history of progressive bifrontal headaches and a giant arachnoid granulation at the posterior superior sagittal sinus. Intrasinus pressure measurements showed no significant pressure difference across the lesion to explain the headaches, which were then treated medically. Durai sinus pressure measurement, in certain cases of giant arachnoid granulations, can be used to exclude the lesion as the cause of the patient's symptoms.

Original languageEnglish (US)
Pages (from-to)1491-1492
Number of pages2
JournalAmerican Journal of Neuroradiology
Issue number7
StatePublished - Aug 2006
Externally publishedYes

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology


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