我们一般把肾结石直径小于5mm的结石称为小结石,因为其较容易通过输尿管排出体外,对于普通人群未进入输尿管引起输尿管梗阻,不影响尿液引流一般不需要行特殊的处理。但对于空勤人员,特别是单座机飞行的飞行员,如飞行中排石导致肾绞痛发作,将会造成严重后果,为保证飞行安全,必须 We generally refer to stones with a kidney stone diameter of less than 5 mm as small stones because they are easier to be excreted through the ureter and do not require special treatment for ureteral obstruction that is not caused by the general population without entering the ureter and without affecting the drainage of the urine. However, flight crews, especially pilots flying on single-seat airplanes, should have serious consequences in the case of flying stone columns causing renal colic attacks. To ensure flight safety, it is imperative that