Protoporphyrin IX formation after application of methyl aminolevulinate on the face and scalp with and without prior curettage

Actinic keratosis (AK) is a precursor for cutaneous squamous cell carcinoma [1]. AKs are classified according to their degree of keratinization, but this does not predict the risk of malignant transformation [2,3], and field treatment of all AKs is therefore recommended [4].
Source: Photodiagnosis and Photodynamic Therapy - Category: Laser Surgery Authors: Source Type: research