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 CASE REPORT
Year : 2016  |  Volume : 11  |  Issue : 3  |  Page : 244-248

Not all cases of nyctalopia are benign: Unusual and serendipitous presentation of Arnold–Chiari Type 1 malformation at a Pediatric Tertiary Care Center


Department of Pediatrics, ESI PGIMSR, ESIC Model Hospital, Mumbai, Maharashtra, India

Correspondence Address:
Kailash Chandra Patra
1101 Gloriosa Apartment, Agar Bazar, Dadar, Mumbai - 400 028, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1817-1745.193358

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The Arnold–Chiari Type 1 malformation (CM1) is a rare congenital abnormality characterized by ectopia or caudal herniation of the cerebellar tonsils through the foramen magnum into the cervical spine, resulting in crowding at the craniocervical junction. It seldom presents in childhood with symptoms and a normal neurological examination. More typically, CM1 presents in young adult women with neurological symptoms including a headache, cervical pain, cranial nerve palsies, neurosensory deficit, and ataxia. Ocular manifestations associated with Chiari I include third and sixth cranial nerve paresis and convergence/divergence abnormalities. Papilledema is a rare manifestation of Chiari I with a clinical presentation often similar to that of idiopathic intracranial hypertension. To underscore this noteworthy complication, the authors report a case of an 8-year-old boy who presented with nyctalopia and suboccipital headaches, but was diagnosed serendipitously as a case of papilledema due to Chiari I malformation.






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