You were lucky. about
3/4 of men on Casodex have a breast reaction to it. But they are usually taking 150 mg, and you were probably taking 50 mg. Tamoxifen is far superior to radiation in preventing those breast reactions.
www.thelancet.com/journals/lanonc/article/PIIS1470-2045(05)70103-0/fulltextOne might not want it if one has a history of blood clots, otherwise I don't know what the downside is.