Simple renal cysts, also known as simple renal cysts, are a benign pathological form. This is a common pathology, ranking second in the group of cystic kidney diseases. The kidney is where simple renal cysts arise and develop.

Up to 95% of renal cysts are benign, usually unilateral. A small number of about 5-10% of renal cysts can develop into cancer with the image of the cyst having an irregular, thick, calcified wall, with internal sound resistance. Most patients with renal cysts have no symptoms, usually detected by ultrasound. Occasionally, patients have atypical signs such as flank pain, fever, hematuria, and hypertension. To treat renal cysts, currently, laparoscopic surgery to remove the tip of the retroperitoneal renal cyst is applied, bringing high treatment efficiency.

It is necessary to aspirate the fluid in the kidney under ultrasound guidance to reduce the pressure in the kidney cyst, remove all the fluid in the kidney cyst and prevent some complications from occurring.

The kidneys play a role in maintaining the water-electrolyte balance in the body, while also excreting some toxins from the body through urine. From the renal pelvis, urine flows through the ureter to the bladder and is excreted. However, if for some reason such as inflammation, stones, fibrosis... a kidney unit is blocked, urine will stagnate and form a kidney cyst.

The kidneys have the role of maintaining electrolytes and eliminating toxins from the body through urine. The kidneys are made up of many units with different functions. When a kidney unit is blocked, urine will stagnate and cannot escape, forming a sac called a cyst in the kidney.