a. What does the picture show?
In this condition, there is intense inflammation with fibrinoid necrosis
of the small and medium size arteries leading to multiple aneurysms
Ocular manifestation occurs in about 15% of the patients with scleritis,
peripharal corneal ulceration, papilloedema, branch retinal vein or artery
occlusion, retinal vasculitis.
The diagnosis of polyarteritis nodosa is based on histopathological
changes in the biopsy material and the presence of microanuerysms in
renal, hepatic or mesenteric angiography.