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Pedro Zaballos, MD; Susana Puig, MD, PhD; Josep Malvehy, MD
Hospital Clinic, Barcelona, Spain

Arch Dermatol. 2004;140:1410.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

The lesions are from the right arm of a 53-year-old man (Figure 1), the left leg of a 57-year-old woman (Figure 2), and the left arm of a 48-year-old man (Figure 3) (size bar, 3 mm) affected with a disseminated superficial actinic porokeratosis. All 3 lesions reveal a similar pattern. A "white track" structure can be identified at the periphery of the lesion with a brownish pigmentation in the inner side and with "double white track" in some parts of the lesion. This structure is characteristic of porokeratosis. The images in Figure 1 and Figure 2 reveal red dots, globules, and lines in the center of the lesion; however, the lesion in Figure 3 shows a white homogeneous area. The single or double "white track" structure at the margin corresponds to the cornoid lamella, . . . [Full Text of this Article]