1.Do kidney cysts have any symptoms? Simple kidney cysts usually have no symptoms. However, when the cyst is large, it will cause the following symptoms (1) discomfort or pain in the lower back and abdomen: the pain is characterized by vague pain, dull pain, fixed on one side or both sides, radiating to the lower part and the back of the waist. If the cyst is combined with infection and bleeding, the patient will feel severe pain, and at the same time, the body temperature rises. (2) hematuria: it can be manifested as microscopic hematuria or carnal hematuria; (3) abdominal mass: sometimes it is the main reason for patients to consult the doctor, 60~80% of them can touch the enlarged kidneys, and the bigger the kidneys are, the worse the renal function is; (4) proteinuria: the amount of proteinuria is not much, and the amount will not be more than 2 grams in the urine in 24 hours, therefore, nephrotic syndrome will not occur; (5) hypertension: cysts compress the kidneys and cause renal ischemia, which increases the secretion of nephrin and causes high blood pressure. increase, causing high blood pressure. (6) Hydronephrosis. If the cyst is parapelvic, it will cause hydronephrosis, which will cause the patient’s waist swelling and pain. 2.What are the methods to slow down the development of renal cysts? For slowing down the development of cysts, except for surgery or puncture drainage of cysts, there is no good method in western medicine. You can try to apply Chinese medicine to regulate the condition, such as “Kidney Cyst Decongesting Formula” or acupuncture treatment. Ionized Chinese medicine can relieve the ischemia and hypoxia of renal intrinsic cells, inhibit the cyst cells from continuing to secrete intracystic fluid, increase the blood circulation on the surface of the cyst, degrade and reabsorb the secreted intracystic fluid, and can be used for treating smaller renal cysts. 3.What methods can be used to detect and follow up renal cysts in general? The following tests can be done to diagnose renal cysts: (1) Urine examination. Urine routine is generally normal, if the cyst compresses the renal parenchyma or is combined with intracystic infection, a small number of red blood cells and white blood cells may appear in urine. (2) Ultrasound. It can understand the number of cysts, size, cyst wall, and can be identified with renal masses, and is the first choice for renal cysts. Typical ultrasound shows that the lesion area has no echoes, and the wall of the cyst is smooth and the boundary is clear. When the wall of the capsule shows irregular echoes or limited echo enhancement, malignant changes should be guarded against. When secondary infection, the wall of the cyst is thickened, the lesion area has fine echoes, and the echoes are enhanced when there is hemorrhage in the cyst. When the imaging suggests that there are multiple cysts, it should be distinguished from polycystic cysts and polycystic kidneys. (3) Intravenous urography (IVU). It can show the extent of cyst compression of renal parenchyma and can be differentiated from hydronephrosis. (4) Renal CT examination. It is valuable for those who cannot be identified by ultrasound. When cysts are accompanied by hemorrhage, infection, or malignant changes, they show inhomogeneity and increased CT value. When CT shows the characteristics of cyst, cyst puncture can be unnecessary. CT urography (CTU) can be done to identify cysts and hydronephrosis. (5) Magnetic resonance imaging (MRI). If further examination of the nature of the cyst is needed, MRI enhancement examination of both kidneys can be performed.