An actinic keratosis is neither malignant nor premalignant: it is an initiated tumor.
Person
John R
JR
Fallon Medical Center, Auburn, Massachusetts, USA.
D002471:Cell Transformation, Neoplastic; D006801:Humans; D007642:Keratosis / Q000209:etiology* / Q000473:pathology; D012878:Skin Neoplasms / Q000473:pathology*; D014466:Ultraviolet Rays / Q000009:adverse effects*