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KMID : 1148020150400040171
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조선대학교의대논문집
2015 Volume.40 No. 4 p.171 ~ p.174
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Rectal Melanoma : Showing Disparity in Immunostaining and Morphology between Biopsy and Resected Specimen
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Cho In-Ju
Lee Mi-Ja
Kim Young-Sook
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Abstract
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Rectal melanoma is extremely rare. Its histologic variability and difference in immunohistochemical (IHC) expression may
hinder the correct diagnosis. Seventy-three years old Korean woman complained of bloody stool and found a 2cm sized rectal pedunculated polyp on colonoscopy. There was some disparity in IHC expressions as well as cytological morphology between biopsy and surgically resected specimen. When strong immunoreactivity of S-100 is encountered in anorectal lesion with unusual morphology, multiple IHC analysis and high suspicion of anorectal melanoma could lead to correct diagnosis.
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KEYWORD
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Rectum, Melanoma, Immunohistochemistry
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