Schwannoma is a noncancerous (benign) tumor also known as vestibular schwannoma or neurilemmoma. Schwannomas involve the Schwann cells in the protective covering of nerves, called the myelin sheath, and can develop anywhere Schwann cells are present. As schwannomas grow, they can cause pressure, irritation or damage to the nerve itself.
River Falls is the most populous city in Pierce county. The population was 15,000 at the 2010 census, with 11,851 residing in Pierce County, and 3,149 in St. Croix County. It is part of the Minneapolis-St. Paul metropolitan area and is about 30 miles (48 km) of the center of the metropolitan area.
Twin Falls is the county seat and largest city of Twin Falls County, Idaho, United States. The population was 44,125 at the 2010 census. Twin Falls is the largest city of Idaho's Magic Valley region.