Left Renal Obstruction

Thomas F Gudas, MD
Steven E Seltzer, MD

September 2, 1994

Presentation

A second CT scan with IV contrast was obtained to rule out renal obstruction and to clarify the nature of the abnormality seen on the first CT.

Imaging Findings

The left kidney initially showed a dense nephrogram and a delay in the pyelographic appearance time. On delayed scans (shown above), there is evidence of forniceal rupture with contrast material leaking out into the perinephric space (arrow). This has decompressed the left renal collecting system and ureter. Upon review of the noncontrast study obtained earlier in the day, a pinpoint distal left ureteral calculus was seen.

Diagnosis

Discussion

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