Collision tumor of the kidney composed of clear cell carcinoma and collecting duct carcinoma treated with cabozantinib and nivolumab

Collision tumors (CT) refer to the phenomenon where two or more apparently different and unrelated tumors occur within the same location in an organ, forming the same lesion. We present the first case of renal CT with a mixed component of clear cell carcinoma and collecting duct carcinoma (CDC) with...

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