Black tumor

A 79-year-old man with many dysplastic nevi, consulted for a nodular bleeding tumour on his back.

Dermoscopic examination was difficult because this lesion was bleeding.

Dermoscopy revealed a bluish pattern, blotches and a brown pigmentation at the border of this lesion.

Pathology revealed a nodular melanoma (Breslow index 3,3 mm).

Dermoscopy of lip pigmentation in a Laugier-Hunziker syndrome

Laugier-Hunziker syndrome is an acquired, benign, macular hyperpigmentation of buccal mucosa lips (and nails). Histologically, pigmentations are due to an accumulation of melanin in the basal layer keratinocytes and an increase in the number of melanophages in the submucosa and/or papillary dermis.

We report dermoscopic pictures of lip pigmentations in this syndrome.

In our case, dermoscopy revealed a reticular pattern and also linear or curvilinear streaks making a parallel pattern.

Reference:

Dermoscopic findings in Laugier-Hunziker syndrome. Gencoglan et al. Arch Dermatol. 2007; 143(5): 631-633