Granulomatosis with polyangiitis (GPA), is a type of anti-neutrophil cytoplasmic antibody (ANCA) associated vasculitis (AAV) that affects small- to medium-sized vessels.1 It can occur equally in both men and women, with a reported mean age at onset of 55 years.2 The classical presentation of GPA includes upper respiratory tract (i.e., chronic sinusitis, serous otitis and…
