• Sarah Selvadurai, Suhail Al-Saleh, Reshma Amin, Allison Zweerink, James Drake, Evan J Propst, and Indra Narang.
• Division of Respiratory Medicine, Hospital for Sick Children, Toronto, Ontario, Canada.
• Laryngoscope. 2017 Feb 1; 127 (2): 513-519.

Objectives/HypothesisTo investigate the utility of a brain magnetic resonance imaging (MRI) in children with sleep-disordered breathing (SDB), classified as isolated obstructive sleep apnea (OSA) in the absence of adenotonsillar hypertrophy, persistent OSA following adenotonsillectomy, isolated central sleep apnea (CSA) of unclear etiology, OSA with coexisting CSA of unclear etiology, or unexplained nocturnal hypoventilation (NH).Study DesignRetrospective chart review of polysomnography (PSG) and brain MRI data.MethodsChildren with PSG evidence of SDB, as described above, and who subsequently had their first brain MRI, were included. PSG, MRI data, and subsequent interventions were recorded.ResultsA total of 59 of 6,087 (1%) children met inclusion criteria. Of those, 28 of 59 (47%) were nonsyndromic children and 31 of 59 (53%) were syndromic children with an underlying medical disorder. Abnormal brain MRI findings were observed in 19 of 59 (32%) children, where eight of 19 (42%) were nonsyndromic and 11 of 19 (58%) were syndromic. Abnormal brain MRI findings were most common in syndromic children with combined OSA and CSA without adenotonsillar hypertrophy. Isolated OSA was also a common PSG finding associated with an abnormal brain MRI. Of the nonsyndromic children with an abnormal brain MRI, the most common abnormal brain MRI finding was Chiari malformation (CM), observed in 88% of the group. A brainstem tumor was identified in one nonsyndromic child. Interventions following brain MRI included neurosurgery, chemotherapy, and noninvasive positive pressure ventilation (NiPPV).ConclusionA brain MRI is an important diagnostic tool in syndromic and nonsyndromic children, especially in children with either isolated OSA or combined OSA and CSA without a clear etiology.Level Of Evidence4. Laryngoscope, 2016 127:513-519, 2017.© 2016 The American Laryngological, Rhinological and Otological Society, Inc.

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