Normal anatomy of the cerebellum (left). Chiari I malformation (right). With the size of the posterior fossa too small, the cerebellar tonsils may herniate through the skull into the spinal canal. The tonsils block the flow of CSF (blue) and may cause fluid buildup inside the spinal cord, called a syrinx.Syringomyelia, hydrocephalus, and other complications.verview. Chiari I malformation is a condition in which the bony space enclosing the lower part of the brain is smaller than normal. Crowding causes the cerebellar tonsils to push through the skull and down into the spinal canal.
Silverton, Oregon. Silverton is a city in Marion County, Oregon, United States. The city is situated along the 45th parallel about 12 miles (19 km) northeast of Salem, in the eastern margins of the broad alluvial plain of the Willamette Valley.
Silver City, NM Profile. Silver City, NM, population 10,330, is located in New Mexico's Grant county, about 126.1 miles from El Paso and 159.0 miles from Tucson. Through the 90's Silver City's population has declined by about 1%. It is estimated that in the first 5 years of the past decade the population of Silver City has declined by about 5%.