Ever since high school, Ethan Damron has wanted to be a radiation oncologist. In July 2019, he and his wife, Kendra, moved to Houston so Ethan could begin medical school. During his first semester, he started experiencing debilitating migraines. These seemed to be worse than the migraines he had been getting for many years

A neurologist suggested that Ethan undergo an MRI. At 6 p.m. on Dec. 3, 2019, Ethan received a call that...