PMC4486096_01
Coronal non-contrast CT scan showing 8 mm obstructive left ureteric calculus and gross left hydronephrosis. (Arrow indicates calculus).
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Non-contrast CT scan showed a 4 mm non-obstructing ureteric calculus and slightly more proximally an 8 mm calculus over the left sacroiliac joint with associated significant proximal left hydronephroureterosis. (Figs. 1 and 2).
Axial non-contrast CT scan showing obstructive ureteric calculus. (Arrow indicates calculus).
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Non-contrast CT scan showed a 4 mm non-obstructing ureteric calculus and slightly more proximally an 8 mm calculus over the left sacroiliac joint with associated significant proximal left hydronephroureterosis. (Figs. 1 and 2).
'Goblet sign' seen on retrograde pyelography.
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Retrograde pyelography revealed what was thought to be a 'goblet' sign with a central small radiopaque calculus (Fig 3).
Ureteroscopy showing intussuscepted ureter with calculus protruding into the lumen of the intussusceptum. Wire is passing to renal pelvis in the ureteric lumen.
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Ureteroscopy confirmed the intussusception with the stone just visible in the inflamed/oedematous lumen of the intussusceptum (Fig 4).
Inflamed ureter around calculus seen during partial LASER fragmentation of the ureteric calculus.
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The stone was partially fragmented as it was thought that the inflammatory changes represented a tumour (Fig 5).
Residual calculus embedded in wall of ureter (arrow) following completion of LASER fragmentation of stone.
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The remaining stone was fragmented, with a residual fragment of stone embedded in the wall of the ureter (Fig 6).