Abducens Nerve Paralysis Induced by a Primary Solitary Sphenoid Sinus Mucocele with Broad Osseous Thinning at the Cranial Base
Hematoxylin and eosin staining. (a) Magnifying glass image and (b) 200× magnification. The cyst displays fibrous walls with squamous metaplasia of the ciliated pseudostratified epithelium due to chronic inflammation (red arrow).
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