There is some disagreement as to whether , for statistical purposes , it should be counted as a cancer : some include DCIS when calculating breast cancer statistics while others do not .
It is the most common type of pre-cancer in women .
There is some disagreement as to whether , for statistical purposes , type should be counted as a cancer : some include type when calculating breast cancer statistics while others do not .
It is the most common type of pre-cancer in women .