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  Contents > Previous page > Article detail print Order
o Issue N# 4 - 2010 o

OTONEUROLOGY

Arachnoid granulations of the posterior temporal bone wall: report of two cases


Authors : Vérillaud B, Savatovsky J, El Bakkouri W, Williams M, Ayache D. (Paris)

Ref. : Rev Laryngol Otol Rhinol. 2010;131,4:281-284.

Article published in french
Downloadable PDF document french



Summary : Arachnoid granulations play a role in CSF drainage. They are primarily located adjacent to cerebral venous sinuses. They may arise on a bony surface causing progressive bony erosion. We report two cases of arachnoid granulations eroding the posterior wall of the temporal bone. The aim of this paper was to illustrate the clinical presentation, and the imaging findings of arachnoid granulation of the posterior wall of the temporal bone. They remain asymptomatic in most cases, but they might cause a communication between the subarachnoid space and mastoid air cells, increasing the risk of bacterial meningitis, subdural empyema, and other intracranial infections. Diffe­ren­tial diagnoses are also described, including endolymphatic sac tumours.

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