PMC7136809_01
Temporal artery biopsy. The larger unaffected temporal artery can be seen on the right (large arrow) while the smaller arteriole involved by vasculitis (small arrow) extends to the left of the temporal artery.
CRIN2020-1426401.001.jpg
PMC7136809_01_CRIN2020-1426401.001.jpg
fig1
A subsequent right temporal artery biopsy (Figure 1) identified vasculitis with fibrinoid necrosis and leukocytoclasis in an arteriolar branch of the temporal artery (Figure 2).
Vasculitis in arteriolar branch of the temporal artery. Extensive fibrinoid necrosis (arrow) and leukocytoclasis with vascular dilatation, destruction of the vascular wall, fibrin deposition, and inflammatory infiltrate in and around the vascular wall.
CRIN2020-1426401.002.jpg
PMC7136809_01_CRIN2020-1426401.002.jpg
fig2
A subsequent right temporal artery biopsy (Figure 1) identified vasculitis with fibrinoid necrosis and leukocytoclasis in an arteriolar branch of the temporal artery (Figure 2).