Hydro nephrosis is a structural situation that commonly takes place while the kidney swells because of the failure of regular drainage of urine from the kidney to the bladder resulting in the distension and dilation of the renal pelvis and calyces. It can have an effect on human beings of any age and is once in a while spotted in unborn toddlers at some stage in ordinary pregnancy ultrasound scans.Whilst no motive may be detectable it's miles called as Idiopathic hydro nephrosis and while there is a definable reason it's miles Secondary hydro nephrosis. Unilateral maybe extramural, intramural or intraluminal and it is normally visible in youngsters. Hydro nephrosis may additionally or won't cause signs. The most important symptom is ache, either in the side and returned, stomach or groin. Symptoms depend on the motive and severity of urinary blockage hazard elements like kidney stones, urinary tract infections might also lead to hydro nephrosis. An ultrasound can be used to commonly diagnose the disease. Treatment for hydro nephrosis ordinarily makes a speciality of getting rid of whatever is blockading the glide of urine and the treatment choice depends on the underlying purpose of the disorder.