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Figure 1. A 72-year-old man was admitted to the hospital with delirium, acute renal failure, increasing hypertension, sudden impairment of vision in the left eye, and severe pain in the left foot. Funduscopic examination of the left eye (Panel A) showed a cholesterol embolus, or Hollenhorst plaque (arrow), at the bifurcation of a retinal arteriole and vascular sheathing distal to the occlusion (arrowheads). No other physical findings were present. Distal pulses were palpable, but two toes later turned purple and one required amputation. Histologic examination of the amputated toe (Panel B) revealed an arteriole with characteristic needle-shaped clefts (arrow) . . . [Full Text of this Article] |
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