Case Presentation: Pulmonary renal syndrome is a condition characterized by diffuse alveolar hemorrhage and rapidly progressive glomerulonephritis. It is often associated with vasculitides, but rarely Type I cryoglobulinemic vasculitis. When presenting in the setting of rare comorbidities, it can be confused with pneumonia and acute kidney injury. This patient was a 66-year-old male with a [...]

Case Presentation: A 76-year-old woman presented with right flank pain and intermittent painless hematuria. Exam was unremarkable. Labs revealed a Cr of 2.35 mg/dL (0.50 – 1.20 mg/dL), BUN 54mg/dL (6.0 – 23.0 mg/dL), and urinalysis with 229 RBCs and >300 protein, but no casts. CT showed bilateral renal nephrolithiasis without hydronephrosis and a distended [...]