ANATOMY

Detailed explanation-1: -renal pelvis, enlarged upper end of the ureter, the tube through which urine flows from the kidney to the urinary bladder. The pelvis, which is shaped somewhat like a funnel that is curved to one side, is almost completely enclosed in the deep indentation on the concave side of the kidney, the sinus.

Detailed explanation-2: -Renal pelvis dilatation (or hydronephrosis) is a widening of the renal pelvis and is a common finding on ultrasound scans (USS) performed during pregnancy. Often it is temporary and not associated with any problems in the kidney or ureter. In this situation, there is no risk for your child’s future health.

Detailed explanation-3: -Hydronephrosis is defined as dilatation and distension of the renal collecting system of one or both kidneys due to obstruction of urine outflow distal to the renal pelvis (i.e., ureter, urinary bladder, and urethra). Dilation of the ureter due to obstruction of urine outflow is called hydroureter.

Detailed explanation-4: -Fetal renal pelvis dilation is a common condition, which is observed in 1–4. 5% of pregnancies. In many cases, this finding resolves spontaneously. However, sometimes it may be a signal of significant urinary tract pathologies.

Detailed explanation-5: -Most people with hydronephrosis will have a procedure called urinary catheterisation to drain the urine from their kidneys. Depending on the underlying cause, medication or surgery may be needed afterwards to correct the problem.