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KMID : 0378020090520030011
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New Medical Journal
2009 Volume.52 No. 3 p.11 ~ p.14
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A Case of Melanonychia Striata in Children
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Kim Sun-Goo
Yi Tae-Min
Kim Yu-Jin
Lee Se-Il
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Abstract
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Purpose: Melanonychia is a darkening of the nail caused by deposition of melanin or other substances such as exogenous materials, microorganisms, drugs, benign melanocytic hyperplasia or nevus, and malignant melanoma. In this report, we present a 9-year old patient with solitary melanonychia striata resulting from a melanocytic nevus.
Methods: A 9-year-old girl presented with one dark longitudinal streaks, which had been present in her right thumb for 2 years and positive Hutchinson sign. A 3 mm punch biopsy from the nail matrix showed that the nests of melanocytic nevus cells with abundant melanin pigments limited to the dermo-epidermal junction. So we excised remnant lesion completely. The lesion was confirmed histologically as melanocytic nevus.
Results: The mass was completely removed and did not recurr. The patient does not complain more about pain or any discomfort.
Conclusion: For the proper management of melanonychia, plastic surgeon should be aware of the various clinical and histopathological features of this condition and recommend nail biopsy for early detection of melanoma when it is necessary.
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KEYWORD
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Melanonychia striata, Nail biopsy, Melanocytic nevus, Malignant melanoma
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