“…To date, 12 cases of isolated calyx have been reported. 6 , 7 , 8 , 9 , 10 , 11 , 12 Nine patients underwent percutaneous/transurethral treatment, and three underwent selective renal artery embolization. In patients with chronic kidney disease including our case, preservation of renal function should be prioritized and resolved by percutaneous or transurethral treatment.…”