Peter is a mischievous 12-year-old boy with an irrepressible rebellious streak, but in the bleak London orphanage where he has lived his whole life those qualities do not exactly fly....
Chiari malformation, also known as an Arnold-Chiari malformation, is a congenital (present at birth) defect occurring in the back of the head where the brain and spinal cord connect.There are four types of Chiari malformations:1  Type 1 â Occurring when the base of the skull and upper spinal area do not form properly, a type 1 Chiari malformation commonly goes unnoticed until problems arise in the adolescent or adult years of life.here are four types of Chiari malformations: 1  Type 1 â Occurring when the base of the skull and upper spinal area do not form properly, a type 1 Chiari malformation commonly goes unnoticed until problems arise in the adolescent or adult years of life.
Chiari malformation is a condition that causes the cerebellum â the part of the brain that controls coordination and muscle movement â to push into the space normally occupied by the spinal cord. Most kids who have it are born with the condition, but some develop it as they grow. Normally, the cerebellum sits at the back of the skull, just above the spine. When a child has a Chiari malformation, the space for the cerebellum is sometimes too small or unusually shaped.