[chrishoney]

I think the OP has a legitimate concern, even though gynecomastia is relatively common (supposedly 60% of males will experience some degree of gynecomastia at some point in their lives.) Age is also a consideration since 'gyne' is more prevalent in males around puberty and age 50 and older.

There actually are a number of nasty things that can cause gynecomastia in a males, with prolactinoma and liver tumors being two of the primary ones. Blood tests are routine screening tests for both. MRI's or CT scans are used to verify the presence and size of suspected tumors.

Hypogonadism also often accompanies gynecomastia in males, and most men would be very concerned about this condition, so your physician may be assuming you at least want blood tests done to get to the bottom of that condition, if you present with the correct signs (decreased function of your junk and atrophy of your testicles.) Again, your doctor will be thinking of ruling out possible differential diagnoses that can result in hypogonadism many of which are quite nasty.

Once all the nasties have been ruled out in your doctor's mind, I would expect them to be quite professional about what they assume is ideopathic gynecomastia, which is, after all relatively common.

Hope this helps.