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KMID : 0359320060460030275
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Korean Journal of Veterinary Research
2006 Volume.46 No. 3 p.275 ~ p.278
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Cutaneous melanocytic tumor in a slaughtered pig
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양형석
강상철/배종희/김재훈
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Abstract
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A 7-month-old brown pig with a discoid and pedunculate mass measuring 14.0×12.5×2.5cm on the skin of the right shoulder was noted at the slaughter house in Jeju. The surface of mass approximately 7×4cm was interfaced with skin. The color of mass with firm consistency was mainly black and partially white on cut surface. Histopathologically, numerous unencapsulated endocrine-like cellular nodules of epithelioid cell type with abundant intracytoplasmic black pigment, melanin, were occupied in dermis and subcutis. Most of nodules in deep dermis were surrounded by lightly pigmented spindle cells and loose fibrous tissues. Mitotic figures were infrequently observed. The overlying epidermis was hyperplastic due to the down-growth of rete peg. Based on the gross and histopathologic findings, this case was diagnosed as cutaneous melanoma. In our best knowledge, this is the first case of swine cutaneous melanoma in Korea.
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KEYWORD
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black pigment, melanocytic tumor, pig, skin
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