title: Juvenile form of spongy degeneration: an instance of Kearns-Sayre syndrome?
mesh_terms: D001927:Brain Diseases / Q000175:diagnosis*; D002648:Child; D006801:Humans; D009410:Nerve Degeneration; D009886:Ophthalmoplegia / Q000175:diagnosis*; D012174:Retinitis Pigmentosa / Q000175:diagnosis*