Neoplasm of the renal pelvis

Hi I am new to this,I wondered if any of you have had my prognosis.i am so scared.they tried to put  the camera up to look deep into the urethrer and into the kidney but the urethrer was too narrow and have put a stent and going to try the procedure in two weeks time, Wednesday they want me to have a Ct scan with contrast on my thorax I’m scared they think it’s gone to my lungs,I wondered if anyone has had any of this experience .thankyou 

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