Should you do sural nerve biopsy (SNB) to Dx vasculitis? Study of 91 pts undergoing SNB suggests the SNB must be off sufficient length to improve Dx yield. 40/91 (44%) showed vasculitis. +SNB assoc w/ longer SNB sample, other organ Sxs & +ANCA https://t.co/aSC9xUfRFB https://t.co/lLRnrqXKaw