Nolva will reduce lump gyno over a period of time ,several months in some cases. However, there is some evidence the SERMS can be liver toxic & carcinogenic with long term use. AIs like Letro are effective at reducing & eliminating gyno & may avoid the use of surgery. I have posted several articles & links to this info as have others if you do search. I have also posted the method of use & the PCT required after use to avoid rebound. Nelson will give you details of his products for use as well.