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PT  - JOURNAL ARTICLE
AU  - Kan, P.
AU  - Stevens, E.A.
AU  - Couldwell, W.T.
TI  - Incidental Giant Arachnoid Granulation
DP  - 2006 Aug 01
TA  - American Journal of Neuroradiology
PG  - 1491--1492
VI  - 27
IP  - 7
4099  - http://www.ajnr.org/content/27/7/1491.short
4100  - http://www.ajnr.org/content/27/7/1491.full
SO  - Am. J. Neuroradiol.2006 Aug 01; 27
AB  - SUMMARY: Arachnoid granulations may expand the dural sinuses or inner table of the skull. Although usually incidental, giant arachnoid granulations that are of sufficient size to fill the lumen of a dural 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. Dural 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.