A Case of Trochlear Nerve Schwannoma Presenting with Binocular Diplopia
Journal of the Korean Ophthalmological Society
;
: 1812-1816, 2016.
Article
in Korean
| WPRIM
| ID: wpr-159672
ABSTRACT
PURPOSE:
To report a case of unilateral trochlear nerve schwannoma in a patient without neurofibromatosis. CASESUMMARY:
A 58-year-old male presented with acute onset of diplopia which developed 10 days prior. Alternate prism cover test, ductions and versions and Bielschowsky three-step test were compatible with left superior oblique muscle palsy. High-resolution magnetic resonance imaging showed a 6-mm-sized lobulated mass in the cisternal segment of the left trochlear nerve passing lateral to the brainstem. An additional thin-section gadolinium-enhanced orbit magnetic resonance imaging showed definite enhancement in the entire portion of the lobulated mass, compatible with a trochlear nerve schwannoma. Diplopia was managed conservatively with prism glasses and regular follow-up examinations were recommended without further treatment.CONCLUSIONS:
A trochlear nerve tumor should be considered in adults who develop diplopia associated with acquired superior oblique muscle palsy.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Orbit
/
Paralysis
/
Trochlear Nerve
/
Brain Stem
/
Magnetic Resonance Imaging
/
Follow-Up Studies
/
Neurofibromatoses
/
Diplopia
/
Eyeglasses
/
Telescopes
Type of study:
Observational study
/
Prognostic study
/
Risk factors
Limits:
Adult
/
Humans
/
Male
Language:
Korean
Journal:
Journal of the Korean Ophthalmological Society
Year:
2016
Type:
Article
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