This paper presents three patients with a triad of syringomyelia, midline posterior fossa cysts, and hydrocephalus. In the first patient, the clinical presentation was related to spinal cord cavitation, and the cranial anomalies were unexpected. In cases 2 and 3, the brain anomalies dominated the clinical picture, and syringomyelia was unexpected. These cases show that an examination of the who...

Introduction: Posterior Fossa arachnoid cysts (PFAC) are rare lesions in the childhood. Owing to wide variety of cystic malformations within posterior cranial fossa, PFAC have long attracted attention pediatric neurosurgeons because they can produce not only neurological symptons but also behaviro and learning deficts, addition presenting major surgical challenges. Surgical treatment is warrant...

Dandy-Walker malformation (DWM) is a congenital abnormality of the posterior cranial fossa with reported incidence of 1:25,000 to 1:35,000 live births [1,2]. The classic clinical trials of the DWM are absence of cerebellar vermis, cystic dilatation of the fourth ventricle, and the enlargement of posterior cranial fossa [3]. In approximately 80% of diagnosed DWM cases, the syndrome is accompanie...