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Acute Visual Loss Secondary to Arnold Chiari Type I Malformation Completely Resolving After Decompressive Posterior Fossa Surgery
- Source :
- International Medical Case Reports Journal. 13:657-661
- Publication Year :
- 2020
- Publisher :
- Informa UK Limited, 2020.
-
Abstract
- We describe the case of a 22-year-old woman of southeast-Asian origin, presenting with unilateral sudden visual loss after a self-healing hearing loss a week before. Ophthalmological examination showed visual acuity of light perception in the left eye, mild RAPD, normal ocular motility and an elevated optic disc with indistinct margins. Neurological examination showed no acute pathology and brain CT-MRI imaging revealed a small-almost subclinical-herniation of the cerebellar tonsils. As investigation eliminated every other infectious or inflammatory cause of papillitis, neurosurgical intervention was proposed. The patient underwent an uncomplicated occipital craniotomy with posterior fossa decompression and had a favorable revolution with regression of papilledema and a fully recovering visual acuity that reached 20/20. Chiari malformation type I refers to an abnormality of the posterior fossa that has a smaller volume than normal, leading to the herniation of cerebellar tonsils, at least 5 mm below the foramen magnum. The occurrence of papilledema associated with Chiari malformation type 1 is rare. Chiari malformation has, until today, mainly been studied among children populations, usually with a poor visual acuity recovery. The originality of our case report consists in the description of an adult patient case showing unilateral, unusual ophthalmological findings and complete recovery after surgical treatment.
- Subjects :
- medicine.medical_specialty
Foramen magnum
Visual acuity
genetic structures
medicine.diagnostic_test
Hearing loss
business.industry
medicine.medical_treatment
Neurological examination
General Medicine
030204 cardiovascular system & hematology
medicine.disease
eye diseases
Surgery
03 medical and health sciences
0302 clinical medicine
medicine.anatomical_structure
030221 ophthalmology & optometry
medicine
medicine.symptom
Papilledema
business
Craniotomy
Chiari malformation
Optic disc
Subjects
Details
- ISSN :
- 1179142X
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- International Medical Case Reports Journal
- Accession number :
- edsair.doi...........5751b741dd8eb378145c58f9a4040ce8