Answer by  
                                                                                          MedStudent01 (1131)
                                                            
                          
                          
                                                          This could mean anything.  There could be a cyst, fibrocystic changes, tissue necrosis due to trauma, a fibroadenoma, or calcium deposits. Cancer alone is hard to diagnose from an X-ray unless it is frankly obvious.  It could also be something wrong with the x-ray itself.