I am in Cardiology Medicine. First of all, liver cysts are quite common and are generally simple fluid filled. An ultrasound would be a better choice for the second go around of test as it will show delineation of borders. Hepatic Cysts (liver cysts) are common especially in men and women over the age of 55. As far a a urologist goes...your friends scare the crap out of you. If you go, you will see the Urologist and he will run some blood tests and talk to you about symptoms. Only after that will he suggest a scope if he feels it is necessary. You are well within your rights to decline. If you are going because of small trace of blood in urine, then that is quite common as well. Not normal, but sometimes we dont ever figure out why a little trace of blood is in urine. On your visit, the urologist will likely do a rectal exam to feel of your prostate to see if it is enlarged. If it is suspected of enlargement, then an ultrasound may be performed at a later date. An ultrasound of the liver is better use of your money than the second CT.