This interactive case features a 67-year-old woman who presents to her primary care physician with pain in her legs. Test your diagnostic and therapeutic skills at NEJM.org.

中文翻译：

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腿痛的异常原因

该互动病例的特征是一名67岁的女性，她向初级保健医生呈现腿部疼痛。在NEJM.org上测试您的诊断和治疗技能。