A month or so ago I wrote about a client's husband w/ a breast lump.  It's
been diagnosed as "gynecomastia" - plain old male breast development - of
unknown cause.  No one seems concerned;  dr said it can be removed if it
keeps growing or is sore to the point of being a problem for him.
Apparently unilateral male breast development isn't all that rare, even in
the absence of obvious hormonal imbalance.  But it was new to me.

Diane Wiessinger, MS, IBCLC, LLLL  Ithaca, NY