Open AccessSmall Onodi Cell Mucocele Causing Chronic Optic Neuropathy -Case Report-
Author(s) -
Hitoshi Fukuda,
Ryu Fukumitsu,
Mitsushige Andoh,
Takayuki Suzuki,
Norikazu Yamana,
Hiroharu Kataoka,
Koichi Iwasaki
Publication year - 2010
Publication title -
neurologia medico-chirurgica
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 0.788
H-Index - 51
eISSN - 1349-8029
pISSN - 0470-8105
DOI - 10.2176/nmc.50.953
Subject(s) - mucocele , medicine , optic canal , lesion , visual disturbance , radiology , optic neuropathy , ethmoid sinus , optic nerve , surgery , anatomy , paranasal sinuses
A 45-year-old woman presented with a rare case of small isolated Onodi cell mucocele manifesting as unilateral chronic optic neuropathy. The patient complained of gradual visual disturbance of her left eye with no other neurological abnormalities. Neuroimaging examinations showed a small cystic lesion located in the left posterior ethmoid extending into the anterior clinoid process. Surgery via the pterional epidural approach revealed a cystic lesion containing mucinous fluid isolated in the anterior clinoid process. Total removal of the lesion combined with unroofing of the left optic canal resulted in relief of the patient's symptom. Histological examination showed the lesion was a mucocele. Based on the radiological and surgical findings together with the histological examination, the final diagnosis was Onodi cell mucocele. Such small Onodi cell mucocele can cause optic neuropathy but is extremely unusual.