Just depends on how the galnd behine is developed, so I would say it varies from person to person. I have some gyno that I've had for years and it fluctuates in size and it mainly runs more to the outside edge of the peck as oppossed to behined the nipple.
One nipple I have the lump "off center" and more in the lower part of the dark area (areola). The other nipple has the lump nice and centered. It won't matter much because hopefully its getting cut out soon.
That sucks because i got one lump behind my right nippel cut out 3 weeks ago and now i got this one at the left side. The odd thing is that i got bloodwork done last week and all my hormone levels is normal. I did not think that it is possible to get gyno if all hormone levels are normal. I'm on hgh and have been for allmost 2 month and i know that hgh can give gyno but then again if my hormone levels is normal i don't see how it is possible.