It all began in the summer of 2004, when she "felt something in my right breast that didn't feel normal," Lyon told PEOPLE in October 2005. "I thought it was probably scar tissue related to my breast implants. It was right along the ridge of the implant, so I let it go, and I let it go for a long time."
Asked why she delayed seeing a doctor, Lyon said, "I didn't have insurance, which is a big part of it. And it really wasn't changing much. But a year later, I felt another lump, and then I felt something under my armpit."