Keratoacanthomas as a Complication of Dermal Filler Injections

摘要

Keratoacanthomas (KAs) are common squamous neoplasms that originate in the pilosebaceous glands. KAs are considered by some physicians to be well-differentiated squamous cell carcinomas. The exact cause of KAs is unknown; however, they are associated with sun exposure, genetic factors, immunosup-pression, carcinogens, viruses, and trauma.