A case of calicopyelocystostomy and one of pyelocystostomy are reported. In the first case, the operation was performed on an autotransplanted kidney. The operation was done in a patient with sponge kidney to facilitate spontaneous excretion of calculi. In the second case, the operation was performed in a patient with long-lasting urinary fistula which developed in a cadaver kidney transplant. Although the authors present only 2 cases, calicopyelocystostomy and pyelocystostomy can be recommended as a valuable method in complicated cases of recurrent nephrolithiasis and in patients with nonhealing long-lasting urinary fistulas which developed in transplanted kidneys.