What could be the cause of lumps in a male breast?

Many, usually benign: Breast cancer in men is rare (0.2% of cancers), usually in men over age 60. A hard, painless lump is a sign of possible cancer and needs biopsy. A painful lump is likely a non-cancerous cyst. A lump in the armpit should be seen by a doctor. Enlarging breasts in men is caused by certain medications, liver disease, alcohol and marijuana use. Men over 60 should examine their breasts for lumps.

Family History Impt: Men with a family history of breast or ovarian cancer in their mothers or sisters, or any male relative with breast cancer, could carry the brca1 or brca2 gene. This gene increases a man's risk for breast cancer and other cancers. Be sure to tell your doctor if you have this family history, examine your breasts regularly, and report any lumps.

Breast tissue: Lumpy breasts are usually breast tissue but the differential diagnosis list is large. One does not want to miss a breast cancer so an exam and possibly biopsy and/or mammogram will be considered by your physician.