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Thursday, 23 September 2010

A 18-year-old man consulted for a pigmented lesion on his left heel.

Dermoscopy revealed a parallel ridge pattern and the presence of aggregated black globules, noticeably visible at the border of the lesion : this unique dermoscopic feature named "pebbles on the ridges" is typical of a subcorneal haemorrhage (or subcorcorneal hematoma, black heel).