Apparently the lump under my left ear is my parotid gland. The doctor felt it and said, he did not feel and tumor and believes my parotid gland is swollen. I don't know how he could tell the difference. It is hard and round. But, I guess he is the expert. He did order a CT scan to make sure. Anybody experience painless swelling of this gland? I do have chronic dry mouth (ever since RAI in march last year). If this has happened to you, what did they do? Praying the doctor is right!