hydronephrosis

Pelvicaliectasis with renal paranchimal atrophy = Hydronephrosis

cholelithiasis

Swelling of the ureter, which always accompanies hydronephrosis, is called hydroureter. Hydronephrosis implies that a ureter and the renal pelvis (the connection of the ureter to the kidney) are overfilled with urine.

Hydronephrosis is when a kidney becomes enlarged due to an obstruction of the urinary tract. To correct it depends on where the obstruction is, but circumcision is certainly not necessary.