国外报道本病生前诊断率不到50%,国内两组尸检报告,在90例及64例中生前作出诊断者,分别为7.8%(7例)及12.5%(8例)。造成漏诊、误诊的主要原因,除缺乏先进的诊断手段外,对诱发本病的因素及其临床表现缺乏足够的认识和警惕,也是一个重要原因。 Foreign reports before the disease diagnosis rate of less than 50%, two autopsy reports in China, 90 and 64 cases were diagnosed before birth, respectively, 7.8% (7 cases) and 12.5% ​​(8 cases). In addition to the lack of advanced diagnostic methods, the main reason for missed diagnosis and misdiagnosis is also an important reason for the lack of adequate knowledge and vigilance on the factors that cause this disease and their clinical manifestations.