Hi!
I was offered the same when I was first diagnosed with LCIS in both breasts in the mid 1980's.
I was afraid of the Tamoxofin as I always seem to develop reactions to meds. So I chose 'watchful waiting' until 2008 when diagnosed with DCIS...I finally did not feel I could do 'watchful waiting' any more...felt like I had been 'lucky' & didn't want to risk it anymore. So in 2008 I had a bilateral mastectomy...I am going to be 80 this week & I feel I did the right thing...but most of my BC friends had implants. I did not & so far content with this decision. When going anywhere I use mastectomy bra...surprisingly comfortable.