Tumor-to-tumor metastasis of clear cell renal cell carcinoma to contralateral synchronous pheochromocytoma: A case report

Figure 1 Enhance computed tomography scan of the upper and lower abdomen and the cut surfaces of tumor masses. A: A tumor mass in the patient’s right kidney; B: A tumor mass in her left retroperitoneum; C: The upper portion of the patient’s right kidney was replaced by a tumor mass. The cutting section of the tumor was tan to whitish or yellowish solid, with hemorrhage and necrosis; D: The cutting section of the left retroperitoneal mass was dark red with cystic changes, hemorrhage, and necrosis. Distinct whitish to yellowish confluenting tumor nodules were observed within the major mass.