Figure 3. Lung biopsy: liquefactive necrosis, lymphocytes, plasma cells (red arrow) and multinucleated giant cells (blue arrow) that generally do not form well-defined granulomas and a destructive, leukocytolytic angiitis involving arteries and veins (yellow arrow). (H - E).

From

Clinical and Histological Features in Wegener Granulomatosis

Li Cavoli Gioacchino, Passantino Rita, Bono Luisa, Tortorici Calogera, Ferrantelli Angelo, Giammarresi Carlo, Rotolo Ugo

American Journal of Medical Sciences and Medicine. 2013, 1(1), 1-4 doi:10.12691/ajmsm-1-1-1