Men can also get breast cancer, but are far less likely to develop it than women. Male breast cancer is a rare malignancy, accounting for 0.2% to 1.5% of all cancers in men and about 1% of breast cancers. Male breast cancer patients are characterized by older age, longer disease duration and poor prognosis. Because of the anatomical characteristics of small size and shorter lymphatic vessels in male breast masses, 54% to 80% of patients develop lymph node metastasis at an earlier stage, which is more dangerous and less easily treated than in women, and the overall 5-year and 10-year survival rates after treatment are slightly lower in men than in women.