In Vivo Observation of Magnified Features of Pigmented Lesions on Volar Skin Using Video Macroscope

Saida, Toshiaki; Oguchi, Shinji; Ishihara, Yasushi

doi:10.1001/archderm.1995.01690150062013

Cited by 105 publications

(44 citation statements)

References 18 publications

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“…The high frequency of PRP in our study is in line with the existing evidence, reporting that a PRP can be found in about 60-85% of AMs [14][15][16][17][18]24,26]. The high frequency of PRP in our study is in line with the existing evidence, reporting that a PRP can be found in about 60-85% of AMs [14][15][16][17][18]24,26].…”

Section: Discussionsupporting

confidence: 91%

“…The PRP was first described by Saida et al [18] and histopathologically corresponds to proliferating melanocytes in the crista profunda intermedia, an epidermal rete ridge located under the surface ridge [14][15][16][17]20]. The PRP is particularly useful for discriminating early AM from acral nevi, which are dermoscopically typified by the accentuation of the pigmentation along the furrows of Parallel ridge pattern in a melanoma in situ of the sole.…”

Section: Discussionmentioning

confidence: 99%

“…Selection of the dermoscopic variables was based on the available literature [13][14][15][16][17][18][19][20][21][22][23][24][25][26]. The global dermoscopic pattern of each tumor was categorized as PRP, IDP, or uncommon global pattern, the latter including lesions that did not match the criteria of PRP nor IDP, as well as those exhibiting more than one predominant dermoscopic criteria (multicomponent pattern).…”

Section: Methodsmentioning

confidence: 99%

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Palmar and plantar melanomas differ for sex prevalence and tumor thickness but not for dermoscopic patterns

et al. 2014

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The specific anatomy of the glabrous skin, characterized by marked orthokeratosis and the presence of furrows and ridges, results in peculiar dermoscopic patterns of acral melanocytic lesions. Most frequently, acral nevi are typified by a parallel furrow pattern and acral melanoma (AM) by a parallel ridge pattern (PRP). Although the dermoscopic patterns of AM have been extensively investigated, little attention has been paid to site-related differences between palmar and plantar AM. The current study aimed to compare patients' characteristics, melanoma thickness, and the morphologic variability of AM depending on the localization on palms or soles. Patients demographics and dermoscopic images of 118 AM, including 99 (83.9%) plantar and 19 (16.1%) palmar lesions (mean thickness, 2.1 mm), were extracted from the databases of seven pigmented skin lesion clinics and were evaluated for the presence of predefined criteria. Palmar melanomas were remarkably more frequent in women (male-to-female ratio, 1/3.8) and thinner than plantar melanomas (1.3 vs. 2.2 mm). Dermoscopically, no significant differences were found between plantar and palmar melanomas, with PRP scored in 64.6 and 68.4% of plantar and palmar lesions, respectively. Non-site-specific melanoma criteria were detected in 83.9% of lesions and, among melanomas not exhibiting a PRP, 95.1% showed at least one non-site-specific melanoma criterion. In conclusion, plantar and palmar AMs show sex-related and thickness-related differences, but do not differ with respect to their dermoscopic features. For cases lacking the PRP, non-site-specific melanoma criteria may be considered as helpful additional clues for the correct diagnosis.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Palmar and plantar melanomas differ for sex prevalence and tumor thickness but not for dermoscopic patterns

et al. 2014

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“…Most of the publications pertaining to the dermoscopic features of acral melanoma and nevi are derived from research conducted in Asian patient populations [1,2,3,4,5,6,7]. This may be primarily due to the fact that acral melanoma is the most frequent melanoma subtype encountered in people of Asian descent [8].…”

Section: Methodsmentioning

confidence: 99%

Dermoscopy of Acral Melanoma: A Multicenter Study on Behalf of the International Dermoscopy Society

et al. 2013

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Background: Most studies on dermoscopy of acral lesions were conducted in Asian populations. In this study, we analyzed these features in a predominantly Caucasian population. Objective: Estimate the prevalence of dermoscopic features in acral lesions, and assess their level of agreement between observers. Methods: In this retrospective multicenter study, 167 acral lesions (66 melanomas) were evaluated for 13 dermoscopic patterns by 26 physicians, via a secured Internet platform. Results: Parallel furrow pattern, bizarre pattern, and diffuse pigmentation with variable shades of brown had the highest prevalence. The agreement for lesion patterns between physicians was variable. Agreement was dependent on the level of diagnostic difficulty. Conclusion: Lesions with a diameter >1 cm were more likely to be melanoma. We found as well that a benign pattern can be seen in parts of melanomas. For this reason one should evaluate an acral lesion for the presence of malignant patterns first.

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“…[4][5][6] The parallel furrow pattern shows brownish linear pigmentation along the sulci of the surface skin markings. [4][5][6] The parallel furrow pattern shows brownish linear pigmentation along the sulci of the surface skin markings.…”

Section: Variations Of Dermoscopic Patterns Of Acral Melanocytic Nevimentioning

confidence: 99%

Dermoscopic Patterns of Acral Melanocytic Nevi

Saida¹,

Koga²

2007

Arch Dermatol

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In Vivo Observation of Magnified Features of Pigmented Lesions on Volar Skin Using Video Macroscope

Cited by 105 publications

References 18 publications

Palmar and plantar melanomas differ for sex prevalence and tumor thickness but not for dermoscopic patterns

Palmar and plantar melanomas differ for sex prevalence and tumor thickness but not for dermoscopic patterns

Dermoscopy of Acral Melanoma: A Multicenter Study on Behalf of the International Dermoscopy Society

Dermoscopic Patterns of Acral Melanocytic Nevi

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