Hi again, Brett,
I checked out your pic and the description in the other thread. Your chest looks great! My little tissue blob is similar to the tissue you highlight there, except so far for me it's only above the incision line, and more forward in my armpit, if that makes sense. (I would post a picture, but I just got traumatized going on imgur. I had never heard of it, but heard you had to make images public for people here to see them, and people started peppering me with comments right away about if the image was "nsfw" because it had female nipples in it. I took the whole thing down immediately. Holy cow.)
I did talk to Dr. Garramone again, and he said that it is very early for my healing to know what will happen with that swelling/tissue. He did say that in that particular spot, it could be lymph nodes and lymphatic tissue that he left alone. He said that in breast cancer surgeries, they remove some lymph nodes and lymphatic tissue, but in top surgery, that would only cause possible problems (like lymphedema, where your arms swell up because you don't have enough lymph nodes and tissue to process the fluids that circulate around your chest/arms). His answer made sense to me. The bottom line is definitely "keep calm and wait for more healing," but it helps to know the options of what it might be. Thanks again for the info/responses.