臨床 Amalgam tattooと診断された口腔内黒色病変例
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概要
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A 59-year-old woman presented with an asymptomatic pigmented lesion on the lower right gingival mucosa. She had received dental treatment two years previously. The pathological findings of the lesion showed irregular black fragments in mucosa. Immunohistochemical analysis of the specimen failed to demonstrate positive staining for melanin and ruled out other pigmented lesions such as malignant melanoma or melanocytic nevus. The diagnosis was consistent with an amalgam tattoo.