A 57-year-old woman presented to our clinic for a pigmented patch on the left foot, which appeared 5 months earlier and progressively enlarged. She felt no pain or any other feelings. Physical examination revealed a light brown patch with an irregular shape and multiple colors, sized 10 mm × 8 mm on the left foot [Figure A].
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机译：一名57岁的妇女因出现左脚色素斑块而出现在我们的诊所，该斑块在5个月前出现并逐渐增大。她没有痛苦或其他感觉。体格检查发现浅棕色斑块形状不规则，有多种颜色，左脚大小为10 mm×8 mm [图A]。
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