(CNN) Doctors are sounding the alarm about a possible link between breast cancer and cell phones. Some experts say they're seeing evidence of breast cancer that could be connected to where some women keep their mobile phones. It's convenient, say many young women about putting their cell phone in their bra. Maybe they should talk to Tiffany Frantz. Tiffany got breast cancer at 21. "I put my cell phone right in my bra," Tiffany said. Her mother had some doubts. "We never took it seriously until after she was diagnosed," said Traci Frantz, Tiffany's mother. "It just so happened her tumors were exactly where her cell phone had been against her skin her bare skin for about six years." With no genetic or other risk factors, surgeons removed Tiffany's left breast. "It's kind of coincidental that it's right where I kept my cellphone," said Tiffany. Coincidence? Donna Jaynes also got breast cancer at 39 --also no risk factors. Her doctor said it was an unusual distribution exactly matching her cell phone. The tumors were just under the surface of her skin. "All in this area right here, which is where I tucked my cellphone," Donna Jaynes said. She says she did that for ten years. She had to have a mastectomy. "Yeah, I thought cell phones were safe," said Jaynes. Breast cancer specialists are now sounding a warning. They say men are also getting breast cancer under cell phones in shirt pockets. The wireless industry denies any problem --citing a lack of scientific evidence that cell phones cause breast cancer." There's no evidence, but that's because we haven't studied it," breast surgeon Dr. Lisa Bailey said. "Until further data either supports it or disproves it, I would keep cell phones away from the body, in particular the breasts," breast cancer radiologist Dr. June Chen said. As for Tiffany's mom says she wishes she'd spoken up. "I am convinced her cell phone has caused her breast cancer," Traci Frantz said. Copyright belongs to KuTV