title: Lesion on the skin.
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D006801:Humans; D007633:Keratins; D008297:Male; D012871:Skin Diseases / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology
chemical_list: D007633:Keratins