thanks thats but my mind at rest.
You certainly should see a surgeon. Men can get all the breast diseases women can; infection, inflammation, cancer. Cancer is rare in men, but any swelling that's not going away needs an answer.
Dear dave999, This could be several things, first thing coming to mind being infection. Breast cancer usually presents as a lump, and breast cancer in men is rare, although it does occur.
Seeing a surgeon to examine this further makes sense as this problem recurrs despite the antibiotics.