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===Further evaluation of suspected tumors===
[[File:CT of bladder cancer.jpg|thumb|Nodular bladder tumor.]]
*Evaluate '''contrast enhancement''' by comparing images before and after IV contrast. Any focal hyperenhancement of the bladder wall must be considered suspicious for malignancy.<ref name="RamanFishman2014"/> For transitional cell cancers, the most common form of bladder cancer, enhancement peaks at about 100 HU at approximately 60 seconds, and then decreasing slowly.<ref name="RamanFishman2014"/> In lack of enhancement, consider a differential diagnosis of a hematoma, although the presence of an underlying tumor is still difficult to exclude.<ref name="RamanFishman2014"/>
*Measure '''size'''
