Keratoacanthoma showing typical keratin plug
Keywords: 70 years, Central keratin plug, Dome-shaped nodule, Inferior nose, Keratoacanthoma, Male, Upper lip, Well-differentiated squamous cell carcinoma
Keratoacanthoma (KA) is a common, rapidly growing, locally destructive skin tumour. KAs may regress spontaneously with scarring, but clinically they may be indistinguishable from well-differentiated squamous cell carcinoma (SCC) and the clinical course may be unpredictable. Thus, many clinicians and pathologists prefer the term SCC, KA-type and recommend surgical excision.
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