DERMOSCOPY OF GRANULOMA ANNULARE AND NECROBIOSIS LIPOIDICA

Granuloma annulare (GA), Necrobiosis lipoidica (NL) are non-infectious cutaneous granulomatous disorders, these diseases share the common histological denominator of granuloma, in recent years dermoscopy has been shown to aid in the recognition of several cutaneous granulomatous disorders, including necrobiosis lipoidica and granuloma annulare, and here we report the dermoscopy patterns of NL and GA and highlight the dermoscopy differences between these diseases.

Objective: To describe the dermoscopy features granuloma annulare and necrobiosis lipoidica and the dermoscopy differences between these diseases.

Materials and Methods:We analyzed all dermoscopy images of patients with biopsy-confirmed GA and NL not currently treated. A total of 8 patients, including 4 patients affected by NL and 4 patients with a diagnosis of GA were included in this retrospective study,Dermoscopy evaluation of all lesions in patients with granuloma annulare the vascular pattern was dominated by Unfocused vessels over a pinkish/ reddish backgroundlinear-irregular vessels and branched vessels were seen in 3 and 1 lesions, respectively on pinkish background, yellowish-orange areas at the periphery of the lesion and several white areas were also evident with diffuse linear striae,  In patients with necrobiosis lipoidica.Dermoscopy evaluation of all lesions in patients with necrobiosis lipoidica, Diffusestructureless, yellowish areas in all lesions, andWell-focused vessels with branching and serpentine, in long-standing lesions, vascular structures appearance and a diameter that decreases from the center to the periphery of the lesion in 3 lesion, in one lesion ulcerations, with yellowish crusts, brownish reticular structures, and whitish structureless areas.

Conclusion: This study highlights the value of dermoscopy examination, a careful assessment of the different dermoscopy structures, helps in the diagnosis of pathologies that may have clinical similarities such as granuloma annulare necrobiosis lipoidica.