Is pyelonephritis dangerous?

Ask
Hello doctor ! Doctor, can you tell me if pyelonephritis is dangerous? Thank you doctor!
Do Thi Thuy Linh

Answer
Renal calyx dilatation is understood as the process of dilation due to hydronephrosis of the kidney. The process of dilating the renal calyces for a long time will make the kidneys deformed, the kidneys will enlarge and thin. The kidney is now shaped like a bag of water and is at risk of rupture at any time.
Renal pyelonephritis is divided into 3 levels from which there will also be different levels of danger:
Grade 1 pyelonephritis: For patients with this mildest grade, only periodic monitoring is needed , do tests that can assess kidney function to find the cause and have specific treatment methods in each different case. Grade 2 pyelonephritis: When the patient's renal pelvis is significantly dilated, compressing the kidneys to narrow, communicate with each other and converge to the renal pelvis. Grade 3 pyelonephritis: At this stage, it means that the kidneys have become very waterlogged. The renal pelvis and calyx are dilated into a large indistinguishable cyst. The kidneys at this time will be very large and dangerous. Therefore, to assess the danger of the disease and the treatment method you should see a urologist for advice. Thank you for your interest and question on Vinmec.com website. Hope you get well soon. Best regards.