I'm 77, a male, diagnosed with gynecomastia, (non-cancerous, tender lump size of walnut under one nipple). doctor wants to start tamoxifen. is this necessary?

Talk to doctor more: You are a 77 year old male who has gynecomastia. Your doctor wants to start tamoxifen but you do not have breast cancer. Whenever you have a new diagnosis make sure you spend the time to discuss with your doctor the reason for any new medication. Also talk with your pharmacist regarding interactions of medications. If you are uncomfortable seek a second opinion before starting.

Can't say: Gynecomastia can be treated with tamoxifen in certain circumstances (usually with partial response), after ruling out certain conditions and drug effects. Whether it is necessary for you, i can't say. Make sure your doc answers your questions to your satisfaction before you take any drug. He may have very valid reasons to try it, but you always have the right for a second opinion too.

Autonomy rules: If you are very sure this isn't male breast cancer (i'm going to assume it was biopsied), and it doesn't bug you, you're within your rights to have it left alone. You can also get with a surgeon and have the thing out in the office. Truth be told, i'm wondering whether communications may have broken with with your own physician & if it's not time just this once for a 2nd opinon just for this reasn.