CASE PRESENTATION A 46-year-old otherwise healthy woman visited the ED twice over a period of 4 days for chest discomfort, midback pain, and dyspnea. The pain was localized, constant, nonpleuritic in nature, moderate in severity, and was not relieved by over-the-counter medications.

中文翻译：

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一名 46 岁女性，纵隔肿块

病例介绍 一名 46 岁的健康女性在 4 天内因胸部不适、中背痛和呼吸困难到急诊科就诊两次。疼痛是局部的、持续的、非胸膜炎性的，严重程度中等，并且不能通过非处方药缓解。