renal forniceal rupture
Calyceal
rupture. Nuclear medicine MAG3 renal scan demonstrating radiotracer accumulation within the mildly prominent renal collecting system and extraluminal radiotracer in infrarenal space consistent with calyceal rupture.
Calyceal
rupture. Coronal non-contrast CT demonstrating mild left hydronephrosis with perinephric and periureteral inflammatory changes.
Calyceal
rupture. Axial non-contrast CT showing mild left hydroureter with periureteral inflammatory changes.
Calyceal
rupture. Nuclear medicine MAG3 renal scan revealing delayed left renal clearance with more than 50% residual radiotracer.
Renal
forniceal rupture • Renal forniceal rupture from ureteric calculus - Ganzer Fall bei Radiopaedia
Renal
forniceal rupture • Urinoma seconday to calyceal rupture - chronic ureteric obstruction - Ganzer Fall bei Radiopaedia
Renal
forniceal rupture • Forniceal rupture from obstructing ureteral stone - Ganzer Fall bei Radiopaedia
Renal forniceal or calyceal rupture is the radiographic finding of a perirenal urine leak as a result of ureteric obstruction.
Anatomy
The renal fornices are the thin pointed projections, arising from the lateral aspects of each minor calyx, and extending a short distance into the renal columns. Each fornix contacts the renal pyramid on its inner surface.
Pathology
The renal fornix is the most susceptible part of the renal collecting system to rupture from increased pressure .
Etiology
Causes include :
- ureteric calculus (~75%)
- extrinsic compression
- malignant
- benign, e.g. pregnancy
- intrinsic obstruction, e.g. hematoma, tumor
- posterior urethral valves
- pelviureteric junction obstruction
- iatrogenic
- trauma
Radiographic features
CT
On non-contrast CT, perinephric low-density fluid and fat stranding will be present. On delayed phase imaging contrast will accumulate outside of the collecting system forming a urinoma .
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Assoziationen und Differentialdiagnosen zu Fornixruptur: