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RETINAL ARTERIAL MACROANEURYSM (RAM)

Originally posted on @retina.rocks 07/24/2023

This 65YO female presented with 2 weeks of paracentral vision loss in her left eye. Vision was 20/25.

Optos color RGB imaging shows multilayered hemorrhages in the nasal and superior macula, including preretinal and subretinal blood.

Swept-source OCT through the preretinal and subretinal areas confirms the locations of the blood. Fluorescein angiography shows a blockage in the blood. The retinal arterial macroaneurysm, which is noted as a yellowish mass within the superior blood clinically, is obscured by the blood angiographically.

Learning Points:
A RAM is thought to occur in a weakened arterial wall from arteriosclerosis, and appears as a yellow-white dilated lesion along a retinal artery within the first 3 bifurcations from the optic nerve.

There are 2 distinct presentations, hemorrhagic and exudative. The hemorrhagic type often presents, as in this case, with pathognomonic multiple layers of blood. Acute macular hemorrhage can be treated with observation, anti-VEGF injections, or thermal laser.