Pneumomediastinum is not an uncommon manifestation of lung toxicity in acute paraquat ingestion. The condition is almost invariably seen with other lung parenchymal abnormalities such as consolidations, ground-glass opacities and interlobular septal thickening. The diagnosis may be challenging in cases with no history of toxin exposure, presentation with a subacute illness and/or absence of typical local or systemic features of paraquat toxicity.

中文翻译：

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隐匿性百草枯中毒引起纵隔积气和机化性肺炎。

纵隔气肿是急性摄入百草枯时肺毒性的常见表现。这种情况几乎总是与其他肺实质异常一起出现，例如实变、毛玻璃样混浊和小叶间间隔增厚​​。如果病例没有毒素接触史、表现出亚急性疾病和/或不存在百草枯毒性的典型局部或全身特征，则诊断可能具有挑战性。