I had a breast reduction done one week ago to relieve back/neck pain. I have two questions. First, the pathology report showed no malignancy in any tissue/nodes taken, but it did describe the nodes as being "reactive with sinus histiocytosis." I'm told these are benign findings but I wonder whether I should be trying to find out WHY the nodes were reactive. Also, the surgical bra they put on me cut across lower under one arm than it was supposed to. I had liposuction on that area and now there is an indentation where the bra was, and the tissue above that indentation is very hard and feels like a ridge or line. What is this and will it go away?