Breast cancer is considered a cancer with a relatively
good prognosis, especially when detected at an early stage, as
its rate of complete cure reaches 80%. However, the survival
rate of breast cancer patients falls with detection in later
stages, and there is a high frequency of recurrence. For these
reasons, the point at which a complete cure is judged to have
occurred, and the potential treatment required to prevent
recurrence, involves a longer period of time compared to
other cancers (Korean Breast Cancer Society, 2008). Therefore,
it is very important to actively detect and treat breast
cancer at an early stage.