Ultrasound (Ultrasonography, Sonogram)   
An examination to locate and measure cystic tumors using very high frequency sound waves, which the human ear cannot hear.

Ultrasound examination   
The use of high frequency sound waves for the purpose of diagnosis.

Ureterostoomy   
A surgical procedure consisting of cutting the ureters from the bladder and connecting them to an opening (see Stoma) on the abdomen allowing urine to flow into a collection bag.