Lesser-known bills signed Wednesday by Maryland Gov. Wes Moore are significant when it comes to detecting and treating lung and breast cancers. Medical experts said some patients skip follow-up screenings because they can't afford it. The newly signed laws require insurance companies to cover the cost. "Some of my patients have had to refuse the additional exams that they needed because they couldn't shell out $500 or hundreds of dollars at the time of the ultrasound or additional mammogram or MRI," said Dr. Stacey Keen, a breast imaging radiologist at the Greater Baltimore Medical Center.