i noticed a faily large lump in my left groin area. It does not hurt. I went to the doctor and had it looked at. He did a ct scan and cbc. Cbc is normal with exception that I am anemic. Ct scan confirmed swollen lymph node but no others. My doctor wants me to wait two weeks to see if there is a change. If there is no change or it gets even larger he will do a biopsy. He is not being forthcoming in his thoughts. What could this be caused from?