Ultraviolet A sunbed used for the treatment of scleroderma.

4. Bahmer FA, Fritsch P, Kreusch J, Pehamberger H, Rohrer C, naevi and Spitz naevi can present a central hypopigmented Schindera I, et al. Terminology in surface microscopy. J Am Acad area with multiple brown dots, but this area lacks the scarDermatol 1990; 23: 1159± 1162. like feature of PM and, instead, is surrounded by a pigment 5. Binder M, Schwarz M, Winkler A, Steiner A, Kaider A, WolŒK, network. et al. Epiluminescencemicroscopy. A useful tool for the diagnosis Dots and globules are considered a major dermatoscopic of pigmented skin lesions for formally trained dermatologists. criterion for the diagnosis of melanocytic lesions (9), and Arch Dermatol 1995; 131: 286± 291. dotted vessels are commonly believed suggestive of melanoma 6. Schamroth JM, Zlotogorski A, Gilead L. Porokeratosis ofMibelli. (8). Their presence in PM must be considered an exception to Acta Derm Venereol 1997; 77: 207± 213. the rule; however, other cases are present in the literature in 7. Sata A, Anton-Lamprecht I, Schnyder UW. Ultrastructure of which the dermatoscopic criterion for the diagnosis of melanoimborn errors of keratinization. VII. Porokeratosis Mibelli and cytic lesions was not respected (10). It is possible that by disseminated super® cial actinic porokeratosis. Arch Dermatol Res extending the use of dermatoscopy to non-melanocytic lesions, 1976; 255: 271± 284. a revision of dermatoscopic patterns will be required. 8. Argenziano G, Fabbrocini G, Carli P, De Giorgi V, Del® no M. Clinical and dermatoscopic criteria for the preoperative evaluation of cutaneous melanoma thickness. J Am Acad Dermatol 1999; REFERENCES 40: 61± 68. 9. Stolz W, RiemannA, CognettaAB, Pillet L, AbmayrW, Holzel D, 1. Goldman L. Some investigative studies of pigmented nevi with et al. ABCD rule of dermatoscopy: a new practical method for cutaneous microscopy. J Invest Dermatol 1951; 16: 407± 410. early recognition of malignant melanoma. Eur J Dermatol 1994; 2. Pehamberger H, Steiner A, WolŒK. In vivo epiluminescence 4: 521± 528. microscopy of pigmented skin lesions. I. Pattern analysis of 10. Ferrari A, Soyer P, Perris K, Argenziano G, Mazzocchetti G, pigmented skin lesions. J Am Acad Dermatol 1987; 17: 571± 583. Piccolo D, et al. Central white scar-like patch: a dermatoscopic 3. Soyer HP, Smolle J, Hodl S, Pachernegg H. Surface microscopy: clue for the diagnosis of dermato® broma. J Am Acad Dermatol a new approach to the diagnosis of cutaneous pigmented tumors. Am J Dermatopathol 1989; 11: 1± 11. 2000; 43: 1123± 1125.