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Phadungsaksawasdi P, Kasuya A, Fukuchi K, Aoshima M, Nakazawa S, Suzuki T, Fujiyama T, Tokura Y, Honda T. Three-dimensional histological explanation of the dermoscopy patterns in acral melanocytic lesions. J Dermatol 2021; 48:1193-1200. [PMID: 33908083 DOI: 10.1111/1346-8138.15907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 03/15/2021] [Accepted: 03/29/2021] [Indexed: 12/01/2022]
Abstract
Dermoscopic images of pigmented lesions have distinct features on the sole where skin ridges and furrows exist. Pigmentation of benign nevus usually locates on the skin furrow, while the malignant melanoma is pigmented on the skin ridge. Correspondence between dermoscopy and pathology in the pigmented lesions on soles have been studied based on conventional vertical pathological images. However, for the full understanding of the correspondence, observation of horizontal histological images would be required, because the epidermis constructs unique horizontal structures, namely crista profunda limitans, crista profunda intermedia, and transverse ridge. In this study, we analyzed basic dermoscopic images of the representative acral melanocytic lesions (nevus, lentigo, and malignant melanoma) by horizonal histological images. We created serial horizontal pathological images by digital reconstruction of a hundred of serial vertical images. We could show that parallel furrow pattern is created by the pigmentation of crista profunda limitans, parallel ridge pattern by the pigmentation of both of crista profunda limitans and crista profunda intermediate, and lattice-like pattern by the pigmentation of transverse ridge. Our results would be useful for the intuitive histological understanding of dermoscopy.
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Affiliation(s)
| | - Akira Kasuya
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kensuke Fukuchi
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Masahiro Aoshima
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Shinsuke Nakazawa
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Takahiro Suzuki
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan.,Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, USA
| | - Toshiharu Fujiyama
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Yoshiki Tokura
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan.,Department of Cellular & Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Tetsuya Honda
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
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An intuitive explanation of dermoscopic structures by digitally reconstructed pathological horizontal top-down view images. Sci Rep 2019; 9:19875. [PMID: 31882764 PMCID: PMC6934765 DOI: 10.1038/s41598-019-56522-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 12/12/2019] [Indexed: 02/08/2023] Open
Abstract
Dermoscopy is a convenient tool to diagnose melanocytic lesions, especially nevus and melanoma. Various pigmented structures, including pigment network, dots and globules, and streaks, are observed in dermoscopy. Usually, 2D vertical images are used to explain the correlation of dermoscopy and histopathology. However, because the image of dermoscopy is horizontal, it is difficult for the horizontal view of dermoscopy to refer to the vertical view of histopathology. In our study, we digitally reconstructed 2D horizontal top-down view images and 3D aerial images from 50–100 serial 2D vertical sections by using high-speed scanner and 3D software in 6 cases of melanocytic lesion. Our new technology intuitively explained the histopathological structures corresponding to the dermoscopic structures. This technique could be used as a good educational tool for beginners.
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Kasuya A, Ito T, Hanai S, Phadungsaksawasdi P, Tokura Y. A steric structure of tufted hair folliculitis. J Dermatol Sci 2019; 97:83-85. [PMID: 31874722 DOI: 10.1016/j.jdermsci.2019.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 12/02/2019] [Accepted: 12/05/2019] [Indexed: 11/29/2022]
Affiliation(s)
- Akira Kasuya
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan.
| | - Taisuke Ito
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Shiho Hanai
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | | | - Yoshiki Tokura
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
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Kasuya A, Phadungsaksawasdi P, Imura K, Miyazawa H, Tokura Y. Capsule‐like naevus: digital 3D reconstruction of its steric structure. J Eur Acad Dermatol Venereol 2019; 34:e46-e47. [DOI: 10.1111/jdv.15895] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- A. Kasuya
- Department of Dermatology Hamamatsu University School of Medicine Hamamatsu Japan
| | - P. Phadungsaksawasdi
- Department of Dermatology Hamamatsu University School of Medicine Hamamatsu Japan
| | - K. Imura
- Department of Dermatology Hamamatsu University School of Medicine Hamamatsu Japan
| | - H. Miyazawa
- Department of Dermatology Hamamatsu University School of Medicine Hamamatsu Japan
| | - Y. Tokura
- Department of Dermatology Hamamatsu University School of Medicine Hamamatsu Japan
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