Arachnoid granulation | definition of arachnoid granulation by Medical dictionary
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Folds of the arachnoid layer of the cranial meninges that project through the inner layer of dura mater into the superior sagittal sinus and other venous sinuses of the brain. Through them, cerebrospinal fluid re-enters the bloodstream. Synonym: arachnoid villus; pacchionian body
References in periodicals archive
Evaluation and management of temporal bone arachnoid granulations
in the transverse and sigmoid sinuses CT, MR, and MR angiographic appearance of a normal anatomic variation.
These changes were sufficient to inhibit the function of the arachnoid granulations
, diminishing CSF resorption with a resulting communicating hydrocephalus.
Protruding arachnoid granulations
mimicking dermoid cysts.