INJECT: A Pilot Study of Intra-tumoral Injections in Metastatic Urological Cancers

Diluted iodinated contrast will be injected under CT fluoroscopy guidance into bone, lymph node, soft tissue, or liver metastases in subjects with metastatic castrate resistant prostate cancer, metastatic urothelial carcinoma or metastatic renal cell carcinoma and pre and post-injection CT images will be obtained to characterize the parameters needed for optimal distribution throughout metastases of a given size. To validate the expression of CD155 in prostate cancer, a biopsy of the metastatic site will be obtained at the time of contrast injection and will be stained for CD155 expression.