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A rare genetic developmental defect during embryogenesis syndrome with characteristics of total or partial colonic aganglionosis associated with peripheral usually multifocal, neuroblastic neoplasm (ganglioneuroblastoma, neuroblastoma, ganglioneuroma). Congenital central hypoventilation syndrome, with variable severity of respiratory compromise, cardiovascular and ophthalmologic symptoms, consistent with autonomic nervous system dysfunction is occasionally associated.
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