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.
Completion of the railroad to Alleyton in 1860 made the town the terminus for the southernmost railroad in the state. Alleyton became the largest and most active town in Colorado County. A post office was established there in 1860.During the Civil War Alleyton was the beginning of the cotton road, which carried cotton, brought by rail, to Mexico by wagon train, in order to bypass the Union blockade of Texas ports.ompletion of the railroad to Alleyton in 1860 made the town the terminus for the southernmost railroad in the state. Alleyton became the largest and most active town in Colorado County. A post office was established there in 1860.