Retinal Arteriolar Macroaneurysm
Retinal arteriolar macroaneurysm is an acquired fusiform or
round arteriolar dilatation occurring in the posterior pole,
generally within the first three orders of retinal arteriole
bifurcation. These abnormalities are first observed in the fifth
decade of life and are associated with surrounding exudative
detachment of the retina, lipid deposition, and hemorrhage beneath, within and above the retina. Macroaneurysms may
be recurrent or multiple, along the course of the same vessel
or seen elsewhere at another arteriole in the same eye. Histopathologically, they are linear breaks in the vascular wall
surrounded by a laminar-fibrin platelet clot with variable
amounts of hemorrhage, lipid-laden macrophages, hemosiderin,
and fibroglial reaction.
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Golden Halo
Tom Hillock|Nicolas Boscovic