Case Presentation: An 83-year-old male with a history of renal cell carcinoma s/p nephrectomy, chronic kidney disease, and hypertension presented to the Emergency Department with several weeks of recurring fevers to 103°F, chills, malaise, fatigue, night sweats, anorexia, and an unintentional weight loss of 4.5 kg. He denied arthralgias, myalgias, neurologic symptoms, rashes, diarrhea, or [...]