这张图：

Who Gets This Cancer?

Female breast cancer is most common in middle-aged and older women. Although rare, men can develop breast cancer as well. The number of new cases of breast cancer was 123.8 per 100,000 women per year.

Percent of New Cases by Age Group: Breast Cancer

Breast cancer rates are highest in people aged 55-64 years.

Median Age
At Diagnosis

61

SEER 18 2006-2010, All Races, Females

来源：
http://seer.cancer.gov/statfacts/html/breast.html
 

所有跟帖： 

• 很有意思。V妹这么聪明，一定能解释二者的差异 -TBz- ♂ (0 bytes) () 01/17/2014 postreply 18:22:06

• 哈哈，人老了不是这病就是那病，乳癌发病率高也不是主要矛盾了。 -viewfinder- ♀ (49 bytes) () 01/17/2014 postreply 18:27:38

• 要努力活过84呀 -红霏- ♀ (0 bytes) () 01/17/2014 postreply 18:27:30

• 过了84也不可放松警惕：） -viewfinder- ♀ (0 bytes) () 01/17/2014 postreply 18:28:29

• 家庭医生对我说 -红霏- ♀ (89 bytes) () 01/17/2014 postreply 18:30:42

• 在老人院里呆着灌水，管他隔了几辈子呢，照样可以上来吵架：）） -Manymore- ♀ (0 bytes) () 01/17/2014 postreply 20:45:35

• 对，网名叫姜太公等爱情 -红霏- ♀ (0 bytes) () 01/17/2014 postreply 22:56:03