Sycamore High rallies behind senior diagnosed with brain cancer Sycamore High rallies behind senior diagnosed with brain cancer and last updated 2021-04-17 23:31:53-04 The last day Parker Denny was able to attend classes at Sycamore High School was Friday, February 19; That weekend, he went to the hospital with serious headaches, and doctors discovered a tumor on the high school senior's brain. "It came as a shock to everyone because we were like 'he was just here Friday,'" said Rose Mitchell, a counselor at Sycamore High School. Surgery to remove the tumor was successful and Denny's outloo...