title: [Diagnostic utility of dermoscopy in pigmented actinic keratosis].
abstract: The diagnosis of pigmented actinic keratosis can be complicated in clinical practice. The differential diagnosis with lentigo maligna melanoma can be difficult due to common clinical and dermoscopic characteristics. We present 5 cases of pigmented actinic keratosis in 4 patients. The most common dermoscopic finding was a grayish-brown granulation with a perifollicular distribution, present in all lesions, followed by rhomboidal structures in 4 cases, and an annular-granular pattern in 3. In no case were asymmetrical pigmented follicular openings observed. We draw attention to key findings that aid preoperative diagnosis of pigmented actinic keratosis.
authors.affiliation: Servicio de Dermatología, Hospital General Universitario Gregorio Marañón, Madrid, España. critxi@yahoo.es
authors.forename: C
authors.initials: C
authors.lastname: Ciudad
authors.forename: J A
authors.initials: JA
authors.lastname: Avilés
authors.forename: R
authors.initials: R
authors.lastname: Suárez
authors.forename: P
authors.initials: P
authors.lastname: Lázaro
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D046169:Dermoscopy; D003937:Diagnosis, Differential; D004817:Epidermis / Q000737:chemistry / Q000473:pathology; D005148:Facial Dermatoses / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D018327:Hutchinson's Melanotic Freckle / Q000175:diagnosis; D015603:Keratinocytes / Q000648:ultrastructure; D055623:Keratosis, Actinic / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008297:Male; D008543:Melanins / Q000032:analysis; D008875:Middle Aged; D009666:Nose / Q000473:pathology*; D012880:Skin Pigmentation
chemical_list: D008543:Melanins