Keywords: ANCA, Antineutrophil cytoplasmic antibody; IgA vasculitis; IgG/IgM vasculitis; LCV, leukocytoclastic vasculitis; MGUS, monoclonal gammopathy of unclear significance; PAS, periodic acid–Schiff; PNP, polyneuropathy; gammopathy; immune complex vasculitis; leukocytoclastic vasculitis; monoclonal gammopathy of unclear significance; occlusive vasculopathy.