A 76-year-old man was admitted to the hospital because of weakness and fever. Seventeen days earlier, he had presented with fatigue, weight loss, and guaiac-positive stool. Within 12 hours after admission, altered mental status developed. A diagnostic test was performed.

中文翻译：

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案例34-2017 —一位76岁的老人，发烧，体重减轻和虚弱

一名76岁的男子因虚弱和发烧入院。十七天前，他出现了疲劳，体重减轻和愈创木脂阳性的大便。入院后12小时内，精神状态发生改变。进行了诊断测试。