Case Presentation: A 40-year-old male presented with acute-onset left back and flank pain radiating to the lower abdomen, along with nausea and vomiting. His initial presentation was most concerning for nephrolithiasis and CT Abdomen/Pelvis was obtained. Imaging demonstrated bulky retroperitoneal lymphadenopathy with a large paraaortic conglomerate, measuring up to 14cm in diameter. The mass was [...]