Retrograde cystography

David C, Dacher JN, Monroe M et al (1998) Retrograde cystography after a first episode of acute pyelonephritis in the child. J Radiol 79 133-137... 

The radiologist should avoid any urethral catheterization when urethral disruption is suspected. Secondary repair is the rule for urethral injuries, so that a minimal imaging evaluation should be performed in emergency situations (Baskin and McAninch 1993). Retrograde opacification of the urethra by water-soluble iodinated contrast medium is the reference examination (Fig. 25.15). A Foley catheter with a balloon inflated in the fossa navicu-laris is used. CT cystography can be considered in cases of bladder neck disruption and/or pelvic bones fractures. 

Fig. 3.7a,b. Urinary leak secondary to failure of ureterovesical anastomosis. Retrograde (a) and voiding cystography (b) show extravasation of contrast agent from the bladder... 

Recurrent graft infections may also be secondary to persistent ureteral reflux into the graft, due to a technical failure of ureteral implantation. Retrograde cystography remains the technique of choice to demonstrate this reflux. 

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