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→Evaluation: Imaged
==Evaluation==
*CT without contrast: Look for kidneys :<gallery>File:3mmstone.png|Kidneys stones. <br>If found, see '''[[CT of kidney stone disease]]'''.</gallery>
*CTs with contrast: Tumors within the kidney, ureters or bladder.
[[File:CT of bladder cancer.jpg|thumb|200px|Nodular bladder tumor.]]
:*Signs of bladder tumor:
::*Bladder wall thickening, which may indicate a bladder tumor, especially when nodular or irregular.<ref name="RamanFishman2014"/> Look both at images 40 seconds after IV contrast and with contrast-containing bladder lumen, since that contrast may both demarcate a tumor as well as obscure one by beam-hardening artifacts.<ref name="RamanFishman2014"/> In suspected bladder tumor, see '''[[CT of urinary bladder tumors]]'''
:*Lymph nodes. Enlarged lymph nodes may be metastases. Generalized lymphadenopathy may indicate lymphoma, and in such cases tumors in the urinary system may be lymphomas as well.<ref name="RamanFishman2014"/>
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