case_images: PMC6409823_01
case_images: Longitudinal melanonychia in the nails of the feet.
case_images: RU-57-83243-g001.jpg
case_images: PMC6409823_01_RU-57-83243-g001.jpg
case_images: f0001
case_images: 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.
case_images: Longitudinal melanonychia in the nails of the hands.
case_images: RU-57-83243-g002.jpg
case_images: PMC6409823_01_RU-57-83243-g002.jpg
case_images: f0002
case_images: 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.
case_images: Skin biopsy showed increased melanin in the basal layer (H/E x200).
case_images: RU-57-83243-g004.jpg
case_images: PMC6409823_01_RU-57-83243-g004.jpg
case_images: f0004
case_images: 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).