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Onodi cell mucocele causing isolated trochlear nerve palsy: A case report
Kyung Won Kwon1, Jin Seok Oh1, Ji Won Kim1
1Department of Otorhinolaryngology-Head and Neck Surgery, National Medical Center, Seoul.
An Onodi cell mucocele, a rare cause of acquired vertical diplopia, led to isolated trochlear nerve palsy in a patient. Endoscopic sinus surgery successfully treated the mucocele, resolving the double vision and improving nerve function.
Area of Science:
- Otolaryngology
- Ophthalmology
- Neurology
Background:
- Acquired vertical diplopia typically results from trochlear nerve palsy due to trauma or vascular issues.
- Tumors or space-occupying lesions rarely cause trochlear nerve palsy.
- This case highlights an Onodi cell mucocele as an unusual cause of isolated trochlear nerve palsy.
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