I went to hospital on 8/5 with what I thought was a kidney stone. Classic symptoms: flank pain, foul smelling urine etc.. Blood and urine showed small UTI and CT was done. Some calicifications on right kindey and was told a cyst on the left. Got a call 8/6 from my husband's urologist and was told it was a " large probale complex cyst but could not rule out mass." The nurse that called said that we needed to have it seen about and that the kidney may have to be removed. Needless to say i am in a state of shock. I am the sole provider for my family as my husband is disabled after being hit by a drunk driver. We have no insurance and we are scared to death. I joined this group because I am needing to vent and hopefully someone has some insight into this. My mother had thyroid cancer in 2004 and is doing well. Does anybody know the chances of this being cancer? I know noone knows for sure I just want to know if they usually do turn out to be cancer or are they cysts. The nurse did say it was large and I read that the larger ones usually are cancerous.