Abstract：
Airway obstruction by foreign bodies or laryngospasms often results in negative pressure pulmonary edema (NPPE). NPPE can develop despite the removal of airway obstruction. This is well-known among clinicians, particularly anesthesiologists, emergency physicians, pediatricians, and radiologists. Computed tomography (CT) features of NPPE include diffuse central ground-glass opacities and thickening of the bronchovascular bundles and bronchial walls. NPPE can also occur after strangulation or smothering with a plastic bag, and is sometimes fatal. Nevertheless, no reports of NPPE are available in forensic journals, and forensic practitioners may not be dedicating the necessary attention to this condition. Recently, the use of postmortem CT as an auxiliary imaging modality for autopsies has increased among forensic institutions in Japan. Understanding the mechanisms and CT findings of NPPE will be useful for forensic practitioners. Herein, we present a case wherein the postmortem CT image revealed NPPE resulting from the obstruction of the airway induced by rice cakes.
摘要：
异物或喉痉挛引起的气道阻塞通常会导致负压性肺水肿（NPPE）。尽管消除了气道阻塞，NPPE仍可发展。这在临床医生中是众所周知的，尤其是麻醉师，急诊医生,儿科医生,和放射科医生。NPPE的计算机断层扫描（CT）特征包括弥漫性中央磨玻璃混浊和支气管血管束和支气管壁增厚。NPPE也可能发生在勒死或用塑料袋窒息后，有时是致命的。然而，法医期刊上没有关于NPPE的报告，法医可能没有对这种情况给予必要的关注。最近,在日本的法医机构中，验尸CT作为尸检的辅助成像方式的使用有所增加。了解NPPE的机制和CT发现将对法医有用。在这里，我们介绍了一个案例，其中死后CT图像显示NPPE是由年糕引起的气道阻塞引起的。
