Perspectives on dermoscopy

An irregular, dappled, pigmented patch

Perspectives on dermoscopy

An irregular, dappled, pigmented patch

Steven Kossard

Figures

Abstract

The follicular orifices on the face create a pigment pseudo-network that differs from the network seen at other sites, where a well developed epidermal rete ridge system is associated with a fine diameter mesh.

Article Extract

Case presentation

Over a five-year period, a 54-year-old man developed an irregular pigmented patch (1.9 cm x 1 cm) anterior to his right sideburn (Figure 1). Dermoscopy revealed a light tan lesion with a prominent broad pigment network formed by numerous oval to round flesh-coloured spaces (Figure 2). A central dark hair could be seen in some of the spaces. Skin biopsy showed that the epidermis had broad, pigmented, club-shaped epidermal ridges adjacent to hair follicles (Figure 3). There was no junctional or nested melanocytic proliferation.