Metastatic clear cell renal cell carcinoma in isolated retroperitoneal lymph node without evidence of primary tumor in kidneys: A case report

Figure 1 A computed tomography scan of the abdomen and pelvis. A: A 1.8 cm left retroperitoneal lymph node which was concerning for malignancy (arrow); B: No recurrent or metastatic disease and no evidence of retroperitoneal adenopathy observed 5 years following the lymph node dissection.

Figure 2 A positron emission tomography/computed tomography revealed intense fluorine-18-deoxyglucose activity in the left retroperitoneal soft tissue nodule adjacent to the medial limb of the left adrenal gland (arrow).