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Cerebrospinal Fluid Rhinorrhea and Otorrhea

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Fig. 14. Images showing the typical appearances and locations of meningoceles in the setting of IIH. ( A ) CT showing polypoid nondependent soft tissue adjacent to bony defect in the lateral recess of the sphenoid sinus ( arrow ), adjacent to foramen rotundum. ( B ) Coronal T2w MR imaging showing herniation of right frontal lobe and CSF into the right ethmoid sinuses ( arrow ). ( C ) Axial T2w images showing bilateral Meckel cave menin goceles ( arrow ). ( D , E ) Coronal CT and T2w images showing a meningocele along the tegmen mastoideum ( arrow ). Note the downward tethering of temporal lobe parenchyma and adjacent traction gliosis of the tempo ral lobe on MR imaging ( arrow in E ). ( F ) Polypoid soft tissue and enlargement of the geniculate ganglion ( arrow ), as commonly seen in facial meningoceles in patients with IIH.

Fig. 15. A 28-year-old woman with IIH. ( A , B ) Maximal intensity projection reformatted images from MR venog raphy show bilateral high-grade stenosis in the distal transverse sinuses ( arrows ).

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