A Red-violaceous Papular Lesion in a Young Girl: A Quiz

Abstract

A 19-year-old girl presented with a 5-month history of an asymptomatic lesion on her right forearm. Physical examination showed a red-violaceous, papular lesion of 10 × 5 mm in size, surrounded by a yellowish area that gradually expanded peripherally (Fig. 1). The patient denied an history of previous trauma to the area. Dermoscopy revealed the presence of red roundish lagoon-like areas in the centre of the lesion and of a thin pigment network at the periphery ( Fig. 2A). Surgical excision of the lesion and histological examination (Fig. 2B) were performed.

Atypical clinical and dermoscopic features of hobnail hemangioma

“…1. [4][5][6][7][8][9][10] From the various reports, it is evident that a lagoon of variable color, with or without a targetoid pattern, is a consistent feature of hobnail hemangioma. In the two of our described cases, dermoscopy neither demonstrated Well-defined red circular blebs Piccolo et al 10 A central reddish structureless area with chrysalislike structures and a peripheral pigment network a targetoid pattern nor had any dermoscopic clue to the diagnosis of a vascular lesion, thus mislead the diagnosis.…”

“…Sahin et al1 Red lagoons sharply demarcated black macule and violaceous maculae ring A homogenous red area with indistinct violaceous ring Red to reddish-blue lagoon, black macule surrounded by erythemaMorales-Callaghan et al4 A central round bright red round structures, smaller round pale-pink structures admixed with a diffuse pink-white pigmentation and peripheral pigment network Lacarrubba et al5 A central round red lagoon-like area with a peripheral thin pigment network Ghibaudo et al6 A central closely packed red-violaceous ovoid structures, whitish-veil and peripheral ecchymotic ring Ertam et al7 Red lagoon-like areas, red homogenous area, linear white structure and a peripheral pigment network…”