It was only by coincidence that Ruth Ann Crouch discovered she had breast cancer.She was teaching elementary school in El Paso in 2000 when she took advantage of a medical van offering mammograms to school staff members.Crouch wasn’t aware until the test was done that a small tumor had formed in her left breast.“I don’t know if it was one of the hospitals that sent that van out or if it was the school that sent it. I don’t know,” Crouch said. “It was my lucky day.”She went to a doctor to confirm the diagnosis. And then she had surgery.The ...