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a A 74-year-old man with several AKs on his left cheek. b, e After 7 days’ treatment with ingenol mebutate, a moderate-to-severe reaction is visible clinically and dermoscopically, with the occurrence of confluent vesicles and pustules. c, f After 15 days, complete healing of the treated area is seen, with absence of residual AKs. d Dermoscopically, AKs are typified by a reddish pseudo network and whitish scales. AK Actinic keratosis
