Bones growth in breast, Any doctors?

My mom is 50 and recently grew a bone in her breast earlier this year. She went for x Ray and doctor said she fractured herself accidentally and bones would adjust themselves and now she have another bone growth in breast. I keep forcing her for mammogram but she won't listen it, This can't be like cancer right? Because doctor said its a fracture and bones would adjust.
Bones growth in breast, Any doctors?
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