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How is male breast cancer diagnosed?
Diagnosis of breast cancer requires identifying cancer cells in tissue specimens obtained by taking a sample of the growth - also called a "mass" or "tumor" - by the technique of biopsy. Since men have little breast tissue, cancers in male breasts are easily palpable (located by feel) and, therefore, are easily accessible to biopsy. Fine needle aspiration or needle biopsy of a suspicious mass can usually establish a diagnosis. A needle is inserted into the mass and tissue from the suspicious area is withdrawn. Microscopic examination of the tissue by a pathologist establishes the diagnosis.
Other techniques that may be used to diagnose breast cancer in men include incisional (removing a portion of the suspicious tissue) or excisional (removing the mass in its entirety) biopsy of a breast mass. If nipple discharge is present, microscopic examination of a smear of the discharge can sometimes establish the diagnosis.