[Neonatal Basedow's disease with premature craniosynostosis and stenosis of the aqueduct of Sylvius].

Newborn from mother with untreated Graves' disease, born with thyrotoxicosis and exophthalmia, treated with carbimazole from age 6 weeks. At age 8 months, persisting hyperthyroidism requiring the continuation of treatment, and premature craniosynostosis with dilatation of cerebral ventricles suggesting a stenosis of the aqueduct of Sylvius.