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Three clinico-dermoscopic scenarios of pigmented nail bands. On the left a 9-year-old child with an irregularly pigmented, congenital melanocytic nevus. In the center a 37-year-old man with a thin and regular nail band favoring the diagnosis of melanocytic nevus. On the right a 43-year-old man with a melanoma in situ seen as a large and irregularly pigmented longitudinal melanonychia.
