J Korean Ophthalmol Soc > Volume 54(3); 2013 > Article
Journal of the Korean Ophthalmological Society 2013;54(3):529-533.
DOI: https://doi.org/10.3341/jkos.2013.54.3.529    Published online March 15, 2013.
A Case of Retinal Pigmentary Degeneration in PKAN.
Seong Ho Jo, Chong Kun Cheon, Yong U Kim, Jae Ho Jung
1Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Busan, Korea. jaeho0130@naver.com
2Department of Pediatrics, Division of Genetics and Metabolism, Pusan National University Children's Hospital, Pusan National University School of Medicine, Busan, Korea.
3Department of Radiology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Busan, Korea.
야맹증을 주소로 한 Pantothenate Kinase-Associated Neurodegeneration (PKAN) 1예
조성호1⋅전종근2⋅김용우3⋅정재호1
Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine1, Busan, Korea
Department of Pediatrics, Division of Genetics and Metabolism, Pusan National University Children’s Hospital,
Pusan National University School of Medicine2, Busan, Korea
Department of Radiology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine3, Busan, Korea
Abstract
PURPOSE
Pantothenate kinase-associated neurodegeneration (PKAN), also known as neurodegeneration with brain iron accumulation is an extremely rare degenerative disease. The present study reports a case of retinal pigmentary changes in PKAN. CASE SUMMARY: A 6-year-old girl presented with night blindness and developmental delay. Neurologic examination revealed toe gait and dystonia. Ocular examination showed retinal pigmentary change in the entire retina without optic atrophy. Brain magnetic resonance imaging showed iron deposits in the basal ganglia, the so-called "eye of the tiger" sign. Genetic tests confirmed a mutation in the gene encoding pantothenate kinase 2. Electroretinography demonstrated severe loss of rod and cone responses, prominently reduced in the rod response. The patient was diagnosed with PKAN and pharmacologic treatment started. CONCLUSIONS: In the case of systemic neurological abnormalities with pigmentary retinal change, PKAN should be considered as a differential diagnosis.
Key Words: Iron;Pantothenate kinase-associated neurodegeneration;Retinal degeneration


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