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.
Population of Sioux Falls, SD. Last official estimated population of Sioux Falls city (Lincoln County**, South Dakota state) was 168,586 (year 2014)[1]. This was 0.053% of total US population and 19.64% of total South Dakota state population. Area of Sioux Falls city is 75.5 miÂ² (=195.4 kmÂ²)[6], in this year population density was 2,234.32 p/miÂ².