A Case of a Mucocele in an Onodi Cell

Recovery of Visual Function in a Patient with an Onodi Cell Mucocele Compressive Optic Neuropathy Who Had a 5-Week Interval between Onset and Surgical Intervention: A Case Report

“…The incidence of Onodi cells varies from 8% to 13% on radiological findings [2] but has a much higher incidence (60%) on anatomic dissection [4]. Neuroimaging is central to the detection of the lesion, and coronal and sagittal views are recommended, as axial CT images alone may not reveal the mucocele if the thickness of the slices used is greater than the width of the Onodi cell [5].…”

“…Its clinical significance relates to the relative position of the Onodi cell to the optic nerve. The pathogenesis is thought to be that of direct mechanical compression from the enlarging mucocele causing a subsequent circulatory disturbance with ischaemia resulting in an optic neuropathy [2, 3]. This paper is of optic neuropathy secondary to an Onodi cell mucocele in a young Chinese patient who had complete recovery of visual function following surgical decompression despite a relatively long time interval between the onset of symptoms and surgery.…”

Onodi Cell Mucocele Causing Acute Vision Loss

“…Arnavielle et al reported a case in which decompression 3 days after the onset of symptoms resulted in complete resolution of symptoms [9]. However, delayed treatment has been associated with a poor prognosis [8,13]. As such, it is not surprising that the patient described here did not recover vision in the affected eye after surgery was carried out more than 6 weeks after the onset of symptoms.…”

“…In addition to the Onodi cell as an unusual location, the anterior clinoid process may also be pneumatized and harbor a mucocele [8]. While most mucoceles are incidentally discovered, both Onodi cell mucoceles and mucoceles involving the anterior clinoid process have been reported to cause visual disturbances [9][10][11][12][13][14]. Patients with erosion into the orbit may present with retro-orbital pain, diplopia and loss of vision.…”

Compressive Optic Neuropathy due to a Large Onodi Air Cell: A Case Report and Literature Review

“…The endoscopic transnasal decompression approach is less invasive, with fewer complication rates compared with the transcranial approach, 11 which makes the former a more-preferable method. Early surgical intervention to decompress the optic nerve may possibly reverse, 7 if not preserve, the visual functions of the optic nerve. Poor visual prognostic factors include poor presenting visual acuity and the sudden onset of symptoms.…”