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KMID : 0032220070190030119
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Annals of Dermatology
2007 Volume.19 No. 3 p.119 ~ p.121
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A Case of Melanoacanthoma
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Park Sang-Young
Yoon Tae-Jin
Kim Kyong-Tae
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Abstract
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Melanoacanthoma is a variant of seborrheic keratosis which was first introduced by Mishima and Pinkus in 1960. This is a very rare and benign, epidermal tumor. Clinically, it is usually manifested in a pigmented, verrucous, round or oval plaque and nodular lesion. This is characterized histologically by nonpigmented keratinocytes and numerous large, richly dendritic melanocytes. We describe a 68-year-old man who suffered from a black-colored plaque on his right shin for 5 years. Melanoacanthoma was diagnosed by characteristic histopathologic findings.
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KEYWORD
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Dendritic melanocyte, Melanoacanthoma, Seborrheic keratosis
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