Long-term follow-up of Marshall-Smith syndrome: report of one case.

The Marshall-Smith syndrome (MSS) is rare congenital disorder, characterized by a triad of orofacial dysmorphism, failure to thrive, and accelerated osseous maturation. An 8-year-old boy with MSS associated with congenital glaucoma, corneal erosion, laryngomalacia, glossoptosis, choanal stenoses, bilateral peripheral hearing defect, ventriculomegaly, congenital heart disease (atrial septal defect), chronic pulmonary disease, and scoliosis was reported. A tracheostomy with endotracheal tube insertion was performed for his difficult airway. He has longer survival time than those MSS patients hitherto reported. High-resolution chromosome banding and extensive metabolic investigation did not detect any abnormality, except for low blood levels of zinc and thyroxine. Besides, brain atrophy with hypoplastic cerebellum and brainstem, and bilateral hydronephrosis with hydroureter were detected by image studies.