Bumpy Carpace-Cutaneous Neoplasms Vol-II

Keratoacanthoma was initially scripted by Hutchison in 1889 and is cogitated as a squamo- proliferative lesion of obscure aetiology which predominantly occurs on sun- exposed skin and infrequently on the mucocutaneous junction. Keratoacanthoma denotes a nomenclature of a self healing carcinoma, molluscum sebaceum, molluscum pseudocarcinomatosum, self healing primary squamous cellcarcinoma, tumour like keratosis and idiopathic cutaneous pseudoepitheliomatous hyperplasia. It is morphologically challenging to differentiate the centroidal segment of keratocanthoma from a squamous cell carcinoma.Keratacanthoma is designated as a benign skin tumefaction of minimal grade with a potential for expeditious evolution. Lesions are dome shaped with a centralized keratinous plug and range betwixt one centimetre to two centimetre in magnitude.Keratoacanthoma was contemplated as a malignant skin condition prior to 1917. Lesions were denominated as a verruca or vegetative cyst amidst 1920's whereas betwixt 1936 to 1950 lesions were referred to as molluscum sebaceum.