Several years ago, I was told by an ENT, after running tests, that I have something nasty in my neck. He didn't say what it was or whether it's in the lymph node or the artery. He just walked out and didn't come back. Now, the area just below my clavical is swollen and the size of a palm and I have swelling on the right side of my body. I take blood pressure medication along with HCTZ, which is a diuretic. Could someone please enlighten me as to what may be causing this?