I was away from this site during 2010, and am now catching up with the forum posts. This article, Male Breast Cancer, may have some helpful information for you. Thank you for your hard work and interest!
There are mostly 5 types cancer occur in men breast cancer.
1. Ductal carcinoma in situ (DCIS)
2. Infiltrating (or invasive) ductal carcinoma (IDC)
3. Infiltrating (or invasive) lobular carcinoma (ILC)
4. Paget disease of the nipple
5. Inflammatory breast cancer