[Radionuclide angiography (RNA) with 99mTc-DTPA to follow palliative embolization of renal cell carcinoma (author's transl)].

In 14 patients with renal cell carcinoma, not to be treated by nephrectomy, radionuclide angiography with 99mTc-DTPA (RNA) was employed before and after palliative tumor embolization. If RNA revealed remaining perfusion of the tumor, functional scintigraphy with 131J-hippurate was performed to detect and quantify residual function. Up to 16 months after embolization, 7 patients (50%) revealed neither residual perfusion nor function. In 5 patients (36%) remaining perfusion without functioning renal parenchyma and in 2 patients (14%) residual perfusion with additional function were found. In 4 cases (28%) a nuclear "tumor-halo" was imaged, describing a stripe of high radioactivity caused by capsular arteries surrounding the avascular tumor. RNA has proven to be a suitable non-invasive procedure for to blow-up of embolized renal cell carcinomas.