ADH questions please

My surgeon called me a few weeks ago with my 6 month followup mri results.  I had two surgerys in less than two years for extensive Adh and alh to a lesser degree.  He said although the radiologist suggested another biopsy he explained my history to him and it was downgraded to birad 3.  With my first two mri's I had went to the hospital but this time went to the radiology center which was much less costly.  My surgeon explained that my adh is so extensive that he would never get a clean margin and took all he could take without losing too much of my small breasts.  The area was slightly smaller from last mri but of course that was from the second surgery I had in December.  I'm a little concerned that this adh is still sitting there.  Surgeon yelled at me that I still didn't take the Tamoxifen.  I had the bottle sitting there and was going to start on my birthday last week and again became fearful.  I asked my surgeon if any of his patients with adh did not take the Tamoxifen and still had B9 results a few years later.  He scared me by saying he has never ever had a patient with as much adh as me.  I started thinking only when I got home that if it's that extensive shouldn't it be called DCIS?  I'm very confused about this.  Also I complained some about the pain I have constantlynow under my armpit .  My adh is is at 12 o'clock but the pain is closer to side of breast more under the arm.  Feels always like a swollen node.  He gave me a thorough breast exam and said the scar and everything looks great.  Has anyone else have extensive adh in one breast and also anyone with pain 6 months after excisional biopsies.  The surgeries were only three months apart.  Would scar tissue produce pain.  But it wasn't put in the mri report that I had any scar tissue.  So greatful for this forum..