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Figure 2: Retrograde pyelography done before ureteroscopy: (a and b) showing filling defect in right ureter at level of upper sacroiliac joint, both proximal and distal ureter are well opacified with radio contrast, (c) showing filling defect in left ureter, faint opacification of proximal ureter is seen at upper sacroiliac joint

Figure 2: Retrograde pyelography done before ureteroscopy: (a and b) showing filling defect in right ureter at level of upper sacroiliac joint, both proximal and distal ureter are well opacified with radio contrast, (c) showing filling defect in left ureter, faint opacification of proximal ureter is seen at upper sacroiliac joint