Comparison of dermatoscopic images of acral lentiginous melanoma and acral melanocytic nevus occurring on body weight-bearing areas

Background: Because body weight-bearing produces a shift in the horny layer, acral melanocytic nevus on the body weight-bearing area of the sole showed a regular fibrillar pattern (FP) due to slanting of the melanin columns in the horny layer. On the other hand, acral lentiginous melanoma (ALM) on...

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Autores principales:	Soko Watanabe, Mizuki Sawada, Sumiko Ishizaki, Ken Kobayashi, Masaru Tanaka
Formato:	article
Lenguaje:	EN
Publicado:	Mattioli1885 2014
Materias:	Dermatology RL1-803
Acceso en línea:	https://doaj.org/article/17de55cc9dbb4d1cbe326aec3f834e68
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spelling	oai:doaj.org-article:17de55cc9dbb4d1cbe326aec3f834e682021-11-17T08:31:56ZComparison of dermatoscopic images of acral lentiginous melanoma and acral melanocytic nevus occurring on body weight-bearing areas10.5826/dpc.0404a082160-9381https://doaj.org/article/17de55cc9dbb4d1cbe326aec3f834e682014-10-01T00:00:00Zhttp://dpcj.org/index.php/dpc/article/view/782https://doaj.org/toc/2160-9381 Background: Because body weight-bearing produces a shift in the horny layer, acral melanocytic nevus on the body weight-bearing area of the sole showed a regular fibrillar pattern (FP) due to slanting of the melanin columns in the horny layer. On the other hand, acral lentiginous melanoma (ALM) on the body weight-bearing area of the sole tended to show irregular fibrillar pattern showing rather structureless pigmentation instead of a parallel ridge pattern, which is due to the shift of the horny layer. Objective: To elucidate the subtle difference between the regular FP of nevus and irregular FP in ALM. Methods: In this study, the dermatoscopic features of five cases of ALM and five cases of acral melanocytic nevus on the weight-bearing area of the sole were compared. Results: All the cases with nevi showed regular FP showing regular distribution of fibrils, whereas all the melanomas showed irregular distribution of fibrils and colors. Fibrils in nevi tended to be clear at the furrows and dim at the ridges. White fibrils corresponding to the eccrine ducts in the horny layer were more often present on the ridges in ALM, which showed negative FP. Conclusion: Differentiating between the regular and irregular FP, including negative FP, might be helpful for the discrimination of melanoma from nevus. Soko WatanabeMizuki SawadaSumiko IshizakiKen KobayashiMasaru TanakaMattioli1885articleDermatologyRL1-803ENDermatology Practical & Conceptual (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Dermatology RL1-803
spellingShingle	Dermatology RL1-803 Soko Watanabe Mizuki Sawada Sumiko Ishizaki Ken Kobayashi Masaru Tanaka Comparison of dermatoscopic images of acral lentiginous melanoma and acral melanocytic nevus occurring on body weight-bearing areas
description	Background: Because body weight-bearing produces a shift in the horny layer, acral melanocytic nevus on the body weight-bearing area of the sole showed a regular fibrillar pattern (FP) due to slanting of the melanin columns in the horny layer. On the other hand, acral lentiginous melanoma (ALM) on the body weight-bearing area of the sole tended to show irregular fibrillar pattern showing rather structureless pigmentation instead of a parallel ridge pattern, which is due to the shift of the horny layer. Objective: To elucidate the subtle difference between the regular FP of nevus and irregular FP in ALM. Methods: In this study, the dermatoscopic features of five cases of ALM and five cases of acral melanocytic nevus on the weight-bearing area of the sole were compared. Results: All the cases with nevi showed regular FP showing regular distribution of fibrils, whereas all the melanomas showed irregular distribution of fibrils and colors. Fibrils in nevi tended to be clear at the furrows and dim at the ridges. White fibrils corresponding to the eccrine ducts in the horny layer were more often present on the ridges in ALM, which showed negative FP. Conclusion: Differentiating between the regular and irregular FP, including negative FP, might be helpful for the discrimination of melanoma from nevus.
format	article
author	Soko Watanabe Mizuki Sawada Sumiko Ishizaki Ken Kobayashi Masaru Tanaka
author_facet	Soko Watanabe Mizuki Sawada Sumiko Ishizaki Ken Kobayashi Masaru Tanaka
author_sort	Soko Watanabe
title	Comparison of dermatoscopic images of acral lentiginous melanoma and acral melanocytic nevus occurring on body weight-bearing areas
title_short	Comparison of dermatoscopic images of acral lentiginous melanoma and acral melanocytic nevus occurring on body weight-bearing areas
title_full	Comparison of dermatoscopic images of acral lentiginous melanoma and acral melanocytic nevus occurring on body weight-bearing areas
title_fullStr	Comparison of dermatoscopic images of acral lentiginous melanoma and acral melanocytic nevus occurring on body weight-bearing areas
title_full_unstemmed	Comparison of dermatoscopic images of acral lentiginous melanoma and acral melanocytic nevus occurring on body weight-bearing areas
title_sort	comparison of dermatoscopic images of acral lentiginous melanoma and acral melanocytic nevus occurring on body weight-bearing areas
publisher	Mattioli1885
publishDate	2014
url	https://doaj.org/article/17de55cc9dbb4d1cbe326aec3f834e68
work_keys_str_mv	AT sokowatanabe comparisonofdermatoscopicimagesofacrallentiginousmelanomaandacralmelanocyticnevusoccurringonbodyweightbearingareas AT mizukisawada comparisonofdermatoscopicimagesofacrallentiginousmelanomaandacralmelanocyticnevusoccurringonbodyweightbearingareas AT sumikoishizaki comparisonofdermatoscopicimagesofacrallentiginousmelanomaandacralmelanocyticnevusoccurringonbodyweightbearingareas AT kenkobayashi comparisonofdermatoscopicimagesofacrallentiginousmelanomaandacralmelanocyticnevusoccurringonbodyweightbearingareas AT masarutanaka comparisonofdermatoscopicimagesofacrallentiginousmelanomaandacralmelanocyticnevusoccurringonbodyweightbearingareas
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Comparison of dermatoscopic images of acral lentiginous melanoma and acral melanocytic nevus occurring on body weight-bearing areas

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