Male breast cancer

Male breast cancer (male breast neoplasm) is a rare cancer in males that originates from the breast. Many males with breast cancer have got it through a "BRCA" mutation, but there are other causes, including alcohol abuse and exposure to certain hormones and ionizing radiation. The optimal treatment is currently not known.
Staging.
In addition to TNM staging surgical staging for breast cancer is used; it is the same as in female breast cancer and facilitates treatment and analysis.
Stage I.
Stage I is an invasive breast cancer with the tumor not exceeding 2 cm and absence of lymph node involvement.
Stage II.
Stage II includes stages IIA and IIB.