大多数疾病一开始都有不适症状,患者一旦出现不适就会及早求医问药,有利于恢复健康。但是,有些疾病在初期、中期无症状或症状较轻,一旦感到不适,就已到了威胁生命的地步。无症状输尿管结石。一般来说,疼痛、血尿是输尿管结石最常见的症状。但也有一些患者无疼痛、无血尿、无明显不适感,以致发展到结石堵塞输尿管,造成尿路梗阻,引起肾积水,并最终发展为不可逆转的肾功能衰竭。临床研究表明,许多慢性肾功能衰竭病人的病因,都是无症状结石造成的。专家指出,所谓无症状结石,还是有一些症 Most diseases have symptoms at the outset. Once the patient has discomfort, he or she will seek medical treatment as soon as possible, which will help restore health. However, some diseases are asymptomatic or mild in the first trimester and threatened if they become unwell. Asymptomatic ureteral stones. In general, pain and hematuria are the most common symptoms of ureteral calculi. But there are also some patients with no pain, no hematuria, no obvious discomfort, resulting in the development of stones blocking the ureter, causing urinary tract obstruction, causing hydronephrosis, and eventually develop irreversible renal failure. Clinical studies have shown that many patients with chronic renal failure are caused by asymptomatic stones. Experts point out that the so-called asymptomatic stones, there are still some symptoms