Acute optic neuropathy due to Onodi cell mucocele: A case report

Koichi Mitsuya, Yoko Nakasu, Satoshi Horiguchi, Norio Ohmagari, Yoshiaki Gu, Hiroya Kashiwagi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We report a rare case of Onodi cell mucocele. The patient was a 37-year-old man who developed acute impairment of his left visual acuity without pain or abnormal findings in the ocular fundus. Bone window CT scan and MR images demonstrated a mass lesion surrounding and over the left optic canal. An emergency craniotomy revealed an Onodi cell mucocele, and its excision resulted in good visual recovery for the patient. Onodi cells are the most posterior air cells of the ethmoid sinus. They are anatomically situated over the optic canal. Onodi cell mucocele must be included in the differential diagnosis of unilateral retrobulbar optic neuropathy. Careful examination of CT scans and MR images, and prompt surgical intervention are recommended.

Original languageEnglish
Pages (from-to)715-719
Number of pages5
JournalJapanese Journal of Neurosurgery
Issue number10
Publication statusPublished - 2006 Oct


  • Mucocele
  • Onodi cell
  • Optic neuropathy

ASJC Scopus subject areas

  • Surgery
  • Clinical Neurology


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