14th July 2026

An 88-year-old woman with Fitzpatrick type I skin presents with a single asymptomatic, enlarging, well-demarcated scaly plaque on her forearm.

An 88-year-old woman with Fitzpatrick type I skin presents with a single asymptomatic, enlarging, well-demarcated scaly plaque on her forearm. She states this has been present for several years. No other lesions are noted. Dermoscopy shows keratosis and glomerular vessels with surrounding erythema.

Select the SINGLE most likely diagnosis from the list below. Select ONE option only.