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.
The Silverton area boasts a number of great day hikes but none can compete with the sheer scenic beauty of Ice Lake. The trail wastes no time gaining elevation, climbing 1,600-ft. in 2-miles through forests and wildflower-filled meadows to the beautiful Lower Ice Lakes basin. Upon reaching the lower basin great views open to Fuller, Vermillion Peak, Golden Horn and Pilot Knob peak rising above the ridge at the head of the basin.