Hi, I ve had about 3 lumps behind my left ear - ranging in size from about 1mmX1mm to about 1cmX2cm - and my doctor keeps brushing them off. I have had them probably at least a 2 years now (yes, I told him this) but he insists it s, just the shape of my head . With my random bouts of dizziness and the fact they weren t there before, I doubt this. Please help! I m only 17 but I m very worried that it could be kidney cancer as I have a lump in my kidney as well (I know this because I had an ultrasound ), the hospital said they didn t know why I had blood in my urine, and I know lymph node cancer can stem from kidney cancer!!! :S