Hopefully after having the opp, they will have removed all of the gland and you won't have any issues. If any of the gland does remain, there is still a chance for gyno. So when you are on cycle, you will want to be sure to keep your estrogen in check. As long as estrogen is kept in check from the start of the cycle, you should be fine. You want to use an AI like adex to control it. With 500mg EW test, I would start with .5mg EOD adex and if you start to get some pre-gyno signs, you can always increase the dose to .5mg ED. If you feel like gyno is coming on, you can always take a SERM like nolvadex while you increase your adex and wait for things to clear up.