Simple renal cyst is the most common cystic kidney disease, divided into isolated and multiple, common in adults over 45 years old, rare in children. Clinical manifestations Most of the clinical manifestations of simple renal cysts are no manifestations, the same as mine, mostly found accidentally during physical examination, but the cyst is too large to compress the ureter, which can cause hydronephrosis and renal function damage; compression of adjacent blood vessels causes local ischemia, increased renin secretion with hypertension; sudden bleeding inside the cyst causes back pain. Diagnosis B ultrasound is the first choice of kidney cyst examination method, the accuracy rate is up to 98% or more, the ultrasonographer see the non-echoic cavity in the kidney, the cyst wall is smooth and the boundary is clear, OK, congratulations, the kidney cyst found you. Some of the more complicated renal cysts need CT to determine, such as renal cyst with bleeding or infection, renal tumor with fewer blood vessels, etc. As for MRI (magnetic resonance imaging), it is used as an alternative for those with renal insufficiency. Treatment Simple renal cysts develop slowly and generally have little effect on kidney function. If the cyst is less than 4cm, ignore it and review the ultrasound once a year. Special note, there is no drug to treat kidney cysts, whether it is western medicine or Chinese medicine, if there is a doctor bullishly bragging that he has such a skill, you spit bubble sticky spit in his face: under the teacher have science, and you dare to cheat me? If the cyst is larger than 4cm, surgery is recommended, because the cyst compresses the renal parenchyma, renal pelvis, calyces and blood vessels, which may result in renal function impairment, secondary hypertension, cyst rupture, etc. There are two main treatment means 1, puncture to extract cystic fluid, this method is very popular in the last century, is under the guidance of B ultrasound, puncture kidney cysts, try to extract all the cystic fluid inside, and then inject a small amount of 95% ethanol into the cyst wall hardening, the effect is immediate, but the recurrence rate is super high, different literature statistics, ranging from 30 to 80%, in 1998 I for a 47-year-old female who strongly requested to perform kidney cyst puncture She came to the hospital every now and then to scold me, which made me sad, and the aggravation was the coldness of my fingertips and the pain in my heart. However, for patients of advanced age and combined with cardiopulmonary insufficiency, it is still a better palliative treatment measure. 2, renal cyst decompression surgery, there are two kinds of open surgery and laparoscopic surgery, is to cut open the cyst, suck out the cystic fluid, cut out the cystic wall, treatment once and for all, laparoscopic surgery in the waist to make three small holes, surgery is simple and less traumatic, has become the “gold standard” for the treatment of simple renal cysts with indications for surgery.