choroidal nevus
A benign pigmented lesion of the choroid that requires monitoring for potential malignant transformation.
Full Definition
A choroidal nevus is a benign melanocytic tumor located in the choroidal layer of the eye, often appearing as a flat, pigmented lesion visible on fundoscopy. These lesions are relatively common and typically asymptomatic, but require regular ophthalmologic surveillance due to their potential for malignant transformation into choroidal melanoma. The risk factors for transformation include increased thickness, presence of subretinal fluid, and orange pigment overlying the lesion. Documentation should distinguish between dormant nevi and those showing suspicious features warranting closer monitoring or intervention.
Usage
Usage note: Always specify location and measurements when describing choroidal nevi in clinical documentation.
In Context
- "The patient's choroidal nevus measured 3.2 mm in basal diameter with no evidence of subretinal fluid." — Ophthalmology consultation note
- "Annual surveillance photography documented stable appearance of the temporal choroidal nevus over three years." — Follow-up examination report