I had a lumpectomy and axilliary clearance 11-3/4 years ago for Grade 1 Invasing Duct Carcinoma with the lump being described as moderately differentiated infiltrating duct carcinoma (NOS) Grade 1.  It was both estrogen and progesterone posive.  I underwent radiation treatment then commenced Tamoxifen 20mg.  I was on the 20mg for 10 years, and my surgeon (who I see every 12 months) advised that he would drop me back to a maintenance dose of 10 mg, and wants me to stay on it for life.  Most people I know are only on 20mg for 5 years then stop taking Tamoxifen.  What are your thoughts?
HelloThanks for your query. The subject you have raised is one that is under intense research and debate. As a standard of practice, Tamoxifen is definitely continued at the very least for 5 years. Newer consensus is emerging that continuing it for longer periods than even 5 years is now recommended and beneficial. There is no scientific recommendation for taking it life long at least. Since you have taken it already for 10 years, I don't see any need for taking it any longer. Wish you all the best.