Tags: Disease.
Keratoacanthoma (KA) is a common low-grade (unlikely to metastasize or invade) skin tumour that is believed to originate from the neck of the hair follicle. Many pathologists consider it to be a form of squamous cell carcinoma (SCC). The pathologist often labels KA as well-differentiated squamous cell carcinoma keratoacanthoma variant because about 6% of KA manifest itself as squamous cell carcinoma when left untreated.
