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Isolated mucocele in an Onodi cell
Y Ogata1, Y Okinaka, M Takahashi
1Department of Otolaryngology, Yamaguchi University School of Medicine, Ube, Japan. yoichi-o@po.cc.yamaguchi-u.ac.jp
ORL; Journal for Oto-Rhino-Laryngology and Its Related Specialties
|December 29, 1998
Summary
A rare case of retrobulbar optic neuropathy was caused by an isolated mucocele in an Onodi cell. Imaging like MRI and CT scans are crucial for diagnosing and planning surgery for this condition.
Area of Science:
- Ophthalmology
- Otorhinolaryngology
- Neurology
Background:
- Recurrent retrobulbar optic neuropathy can present with visual acuity impairment and visual field deficits.
- Steroid treatment may offer temporary improvement in some cases of optic neuropathy.
Observation:
- A 63-year-old male experienced recurrent left optic neuropathy, with symptoms including decreased visual acuity and blurred vision.
- Magnetic resonance imaging (MRI) identified a mucocele within the left Onodi cell, compressing the optic nerve.
Findings:
- An isolated mucocele in the Onodi cell, even when small, can cause significant retrobulbar optic neuropathy.
- Endoscopic sinus surgery revealed optic canal erosion by the mucocele, confirming the cause of compression.
Implications:
- This case highlights the importance of advanced imaging, particularly MRI and coronal CT, for diagnosing optic neuropathy originating from Onodi cell lesions.
- Early and accurate diagnosis through appropriate imaging is essential for effective surgical planning and management of optic nerve compression.