Treatment of pediatric intracranial dissecting aneurysm with clipping and angioplasty, and next-generation sequencing analysis: A case report and literature review.

Background: Large intracranial dissecting aneurysm (IDA) in the anterior cerebral circulation is rare in children. There has been no consensus on the diagnosis and treatment for IDA in children.

Case Summary: We report a 3-year-old boy with a large ruptured IDA in the right middle cerebral artery (16 mm × 14 mm).

Dermoid cyst of the posterior fossa associated with congenital dermal sinus in a child.

Background: Intracranial dermoid cysts are congenital benign neoplasms. Hydrocephalus and abscess as the principal manifestations of the posterior fossa dermoid cyst are rare. We present a case of obstructive hydrocephalus and abscess induced by an adjacent dermoid cyst with occipital dermal sinus.