Riverview Hospital will host a Cancer 101 seminar from 6 to 7 p.m. on Oct. 3 in the Krieg DeVault Conference Room, located in the lower level of the Women’s Pavilion. Thomas Dugan, a board certified radiation oncologist, will share information on the basics of cancer, steps you can take to prevent it and the latest treatment options. A light dinner will be served. The program is free. Registration is required and may be made at www.riverview.org or by calling 776-7999.