keloid
Pronunciation: KEE-loid
Raised scar formation that extends beyond the original wound boundaries.
Full Definition
A keloid is a type of abnormal scar formation characterized by excessive collagen production that extends beyond the original wound boundaries and rarely regresses spontaneously. Keloids differ from hypertrophic scars in that they grow beyond the confines of the original injury and have a higher recurrence rate after treatment. They commonly occur in areas of high skin tension such as the chest, shoulders, and earlobes, and show a predilection for certain ethnic groups, particularly individuals of African descent. Treatment options include intralesional steroid injections, surgical excision combined with adjuvant therapies, radiation, and silicone sheeting, though recurrence rates remain significant.
Usage
Usage note: Distinguish from hypertrophic scars, which remain within the original wound boundaries.
In Context
- "The patient developed a keloid following ear piercing that extended well beyond the original site." — dermatology consultation
- "Keloid excision was planned with immediate post-operative radiation to reduce recurrence risk." — treatment plan