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.
Covering approximately 74 square miles in the eastern region of South Dakota, Sioux Falls offers residents and visitors attractive big-city amenities, such as shopping and cultural attractions. Home to approximately 162,000 people, the city continues to grow, as does the roster of fun things to do in Sioux Falls. Falls Park is a showpiece of the city, highlighted by a continuous gush of water cascading over stone falls.