Keratoacanthoma

Abstract

Keratoacanthoma (KA) is a rapidly growing tumour that presents more commonly in the elderly, in fair-skinned individuals and on sun-exposed areas. There have been many treatment options for KA including complete excision, radiation therapy, intralesional injection of chemotherapeutic agents, oral retinoids, photodynamic therapy and, recently, 5 % imiquimod cream. Cryotherapy can be an effective option for the non-operative management of KA. Spontaneous regression of KA can be promoted by cryotherapy. The scar is cosmetically better when involution of KA is achieved by cryotherapy than when it spontaneously happens.