Pathology back but no dancing for me

Well one tube out and one left and it does feel good for the little victories. My pathology was some good some not so. My tumor(invasive duct) was under the nipple and 9mm but I had a field of calcium behind it that did not look good so I opted for the mastectomy. Lucky for me cause behind that field was another invasive (already) tumor 3.3 mm smaller but there, tested the same as the one found. No one including my surgeon, radiologist, mammo, ultra sound saw or felt it. I have clear margins on the mast but they also found Lymph-Vascular invasion and of the four nodes they took I am considered clear but they found a isolated tumor cell cluster 0.15 mm. So now maybe chemo but no rads.

Does anyone know about Lymph-vascular invasion? My surgeon said that the smaller tumor would have been had by rads had I opted for a lump or I would have had to go back because of the margins (ugh). I think the lymph-vascular meant it was traveling in the breast. She also said traveling is normal and that if she did a bone marrow they would probably find those bad boy cells there too. They just want to stop them from taking up residence.

So here I had the second best dx you could get T1N0M0 invasive, I took the tougher route and that bad boy still got me.

However there were so many dancing with NED reports in the last 2 days I think I am ok. Its just that it scares the bejesus out of me to know that it is so hard to see and hard to find when it is small.