Explore a complex case of a man with acute Renal Failure, constitutional symptoms, and multi-organ involvement. Uncover the key autoantibody in this vasculitis.
Which one of the following is likely to be positive in a man with acute renal failure and these findings?
What is the most likely diagnosis?
Acute Kidney Injury, Antineutrophil cytoplasmic autoantibody, Glomerulonephritis, Granulomatosis with polyangiitis, Vasculitis