名词
中文翻译：色素痣
同义词：
['melanotic nevus', 'pigmented birthmark', 'pigmented mole']
例句：
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1. The patient had a pigmented nevus on his cheek that was causing him discomfort.
患者脸颊上有一颗色素痣，让他感到不适。
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2. The doctor removed the pigmented nevus from the patient's arm to prevent infection.
医生从患者的手臂上移除了色素痣，以防止感染。
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3. The pigmented nevus on the patient's neck is a concern for their family because it may be cancerous.
患者脖子上的色素痣让家人担忧，因为它可能是恶性的。