【病例】从上海某房地产公司退休的张女士,经常熬夜,根本没有正常的生活规律。最近她总感觉乳房不舒服,晚上睡觉时发现,乳房中好像有明显的肿块,但并不感觉疼痛。于是,张女士去医院检查,结果检查出是乳腺癌早期。客观地讲,张女士算不幸中的万幸,因为乳腺癌如果能早期发现,约95%的病人可以得 【Case】 Ms. Zhang, who retired from a real estate company in Shanghai, often stays up late, and there is no regular pattern of life. Recently, she always felt uncomfortable breasts. At night she found that there was a noticeable mass in her breasts but she did not feel pain. As a result, Ms. Zhang went to the hospital for an examination and found out that it was early stage of breast cancer. Objectively speaking, Ms. Zhang is fortunate in her misfortune, because if breast cancer can be detected early, about 95% of patients can get