November 7, 2008 11:18 am Stage “Zero” Breast Cancer It can be confusing for those who are told they have stage zero breast cancer. Many wonder how “stage zero” can even mean cancer at all. But, it is serious and must be treated. US & World Videos 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner 2:05 How ‘Love Is Blind' made Vanessa Lachey and Nick Lachey's marriage stronger 2:03 Does Shakira still believe in love following Gerard Piqué split? 1:36 O.J. Simpson's cause of death revealed 25:57 WATCH: ‘Changing Climate' highlights the Philly-area residents who are combatting climate change