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Case 84 

Case 84
Case 84

Ellen Chung

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date: 17 January 2021

8-year-old boy with developmental delay.

Sagittal T1- (left) and T2-weighted (right) images show herniation of meninges, cerebrospinal fluid, and the optic chiasm (arrowheads) through a defect in the sphenoid bone into the posterior nasopharynx.

The differential diagnostic considerations for frontoethmoidal and nasal lesions include nasal glial heterotopias (herniated glial tissue without communication with the intracranial contents) and dermoids/epidermoids....

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