hollenhorst plaque
Pronunciation: HOL-en-horst plak
Bright, refractile embolic deposits visible on fundoscopic examination, typically composed of cholesterol crystals lodged in retinal arterioles.
Full Definition
Hollenhorst plaques are bright, yellow-orange, highly refractile embolic particles that appear as glistening deposits within retinal arterioles during ophthalmoscopic examination. These plaques are most commonly composed of cholesterol crystals that have embolized from atherosclerotic plaques in the carotid circulation. They serve as important clinical markers of cardiovascular disease and increased stroke risk. The plaques are typically asymptomatic but may occasionally cause transient visual symptoms if they temporarily obstruct retinal circulation. Recognition of these findings is crucial for neuro-ophthalmologists as they indicate the need for cardiovascular evaluation and stroke prevention measures.
Usage
Usage note: Always lowercase 'hollenhorst' unless beginning a sentence. The term is named after Robert Hollenhorst, who first described these findings.
In Context
- "The fundoscopic examination revealed multiple hollenhorst plaques in the temporal retinal arterioles, prompting immediate carotid duplex imaging." — Clinical examination report
- "Although the patient's visual acuity was normal, the presence of hollenhorst plaques indicated significant atherosclerotic disease requiring neurological consultation." — Neuro-ophthalmology consultation note