PMC4310099_01
Ultrasonography scan demonstrating moderate hydronephrosis with no renal stone. Arrow indicate dilated pelvicalyceal system
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F1
Ultrasonography was carried out and showed moderate hydronephrosis with no hydroureter or renal stones [Figure 1].
Computerized tomography scan of the same patient was unremarkable apart from mild hydronephrosis and perinephric fat stranding
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F2
Noncontrast thin cuts hi-speed advantage spiral CT (General Electric Medical Systems, Milwaukee, USA) using flank pain protocol-helical technique with breath-holding at 120 kV, 200 mA with 5 mm collimation and viewed using the abdominal window) was done to evaluate the possibility of ureteric stone and was unremarkable apart from mild hydronephrosis and perinephric fat stranding [Figure 2].
Large renal stone as seen during ureteroscopy
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F3
She was admitted and underwent diagnostic retrograde pyelography and then ureteroscopy that revealed the presence of 2 cm x 2 cm stone in the right renal pelvis [Figure 3] that was subsequently easily fragmented by laser intracorporeal lithotripsy.