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I just received your questions. Would you still like my help?
Yes, a complex renal cyst can possibly be cancer and can be the cause of blood in the urine. A urologist is definitely the type position that you need to see. As long as they order a CT scan with the renal mass protocol, this would be the appropriate CT scan to be done. Then reviewed by the urologist to determine if you need surgery to remove the cyst. Hope this helps.
No, a CT scan without contrast cannot determine if this is cancer or not. The CT scan renal mass protocol does use IV dye contrast and this is what you need to have done.
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