Craniovertebral lipoma associated with hydrocephalus: report of two cases.

Craniovertebral lipomas in children are rare, especially in association with hydrocephalus. We present two cases of craniovertebral lipomas, accompanied by hydrocephalus. Despite eliminating cerebrospinal fluid pathway occlusion as a result of lipoma resection, both patients were complicated by exaggerated ventriculomegaly requiring ventriculoperitoneal shunt placement. Eventually, both children were discharged home after regression of symptoms of increased intracranial pressure and remained stable during long-term follow-up. However, the pathogenesis of expanding hydrocephalus in such cases is yet unclear.