The urological procedures: renal cyst decortication: 21 (Left: 10, Right: 11), parapelvic cyst removal: 1, removal of adrenal cyst: 1, orchidopexy for undescending testis: 1, pyeloplasty: 11 (Left: 4, Right: 7), ureterolithotomy: 19 (Left: 13, Right: 6), pyelolithotomy: 4, simple nephrectomy: 13 (Left: 5, Right: 8), radical nephrectomy: 3 (Left: 1, Right: 2), partial nephrectomy: 2 (Right).