This consensus document is not a rigid constraint on clinical practice, but a concept of good practice against which the needs of the individual patient should be considered. It therefore remains the responsibility of the individual clinician to interpret the application of these guidelines, taking into account local service constraints and the needs and wishes of the patient. It is not intended that these consensus documents are applied as rigid clinical protocols.  

Breast cancer in men is rare and there is very limited research to guide treatment in this specific population; treatment approaches to date have been guided by studies in women.  

For men diagnosed with breast cancer, decisions about using hormonal therapy, targeted therapy, and immunotherapy medicines after surgery should be made the same way they are for women diagnosed with breast cancer.