Hi all -
The few galactoceles I've encountered have been near the areola - sort of an
aneurysm of the milk duct.  For mom #1, once the edema was managed and good
flow established, it just bulged out and the baby gulped the milk down.
 Looked odd, no pain, no ongoing problem.  Mom #2 found it extremely painful
everytime it filled with milk, and because the walls of the duct were so
elastic it filled very quickly.  She wrestled with it for weeks and finally
weaned on that side and continued BF on the other without incident.  Said she
was considering surgery, but then moved out of town and made no further
contact.

There's an photo of one in the "Breast Imaging" textbook.

Linda Smith, LC in private practice, Dayton OH - and glad I keep my camera
handy now.