PMC6409823_01
Longitudinal melanonychia in the nails of the feet.
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In physical examination the patient also had longitudinal melanonychia in the nails of the hands and feet (Figs. 1 and 2) and brown pigmentations on the lips (Fig. 3) and in the pretibial region of the skin.
Longitudinal melanonychia in the nails of the hands.
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In physical examination the patient also had longitudinal melanonychia in the nails of the hands and feet (Figs. 1 and 2) and brown pigmentations on the lips (Fig. 3) and in the pretibial region of the skin.
Skin biopsy showed increased melanin in the basal layer (H/E x200).
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As a result of a skin biopsy taken from the right pre-tibial region, increased melanin deposition was revealed in the basal layer (Fig. 4).