title: Joubert syndrome with variable features: presentation of two cases.
abstract: Joubert syndrome is a very rare disorder characterized by respiratory irregularities, nystagmus, hypotonia, and global developmental delay with abnormalities of cerebellum. We present two cases of this syndrome with different phenotypes. The first case was an 8-month-old girl with hypotonia, apnea, and mild developmental delay as well as retinal degeneration and unilateral renal cystic dysplasia. The second case was a 27-month-old boy who presented with episodes of hyperpnea, apnea, retinal dystrophy, and severe global developmental delay. Both patients had normal metabolic profile and prototype imaging of joubert syndrome including vermis agenesis and molar tooth sign.
authors.affiliation: Professor of Pediatric Neurology, Pediatric Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Barzegar
authors.affiliation: Assistant Professor of Pediatric Neurology, Pediatric Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
authors.forename: Majid
authors.initials: M
authors.lastname: Malaki
authors.affiliation: Adult Neurologist, Pediatric Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
authors.forename: Elyar
authors.initials: E
authors.lastname: Sadegi-Hokmabadi
keywords: Developmental Delay; Joubert Syndrome; Molar Tooth Sign; Respiratory Irregularity