A 33 year-old woman presented with complex partial seizures which often generalized. On examination, there was subtle right sided weakness. Arachnoid Cyst of the Middle Cranial Fossa: Axial CT scans.

Chiari malformation, an anomaly of the posterior cranial fossa, also known as Arnold–Chiari malformation, was described in autopsies by Hans Chiari, an Austrian pathologist, in 1891. He defined four ...