Rare Diseases and Scientific Inquiry;
罕见疾病和科学探索；
There is no single, widely accepted definition for rare diseases.
目前仍然没有一个统一，并且被广泛接受的关于罕见病的定义。
However, there are some rare diseases, which not many people realize.
然而，有一些罕见的疾病却没多少人知道。
Both diseases are rare, but have a capacity to cause dramatic outbreaks with high fatality.
这两种疾病极为罕见，但有引起剧烈暴发的潜力，且病死率很高。
Objective To investigate radiology diagnosis of rare heart diseases.
目的分析和探讨心脏罕少疾病影像学诊断。
This disease is rare, and it can be misdiagnosed as other diseases.
临床上该病较少见，容易误诊为其它疾病。
This disease is rare, and it can be misdiagnosed as other diseases.
临床上该病较少见，容易误诊为其它疾病。
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