Young Sup Shim MD, Presenter: Nothing to Disclose

Hyuck Jae Choi MD, Abstract Co-Author: Nothing to Disclose

Kyoung-Sik Cho MD, Abstract Co-Author: Nothing to Disclose

To assess the efficacy of urothelial phase of CT urography for detection of recurred bladder cancer in patients performed previous transurethral resection of urinary bladder in comparison with excretory phase of CT urography.

272 CT urography examinations were performed in biopsy proven recurred cancer patients (n=67) and patients without tumor recurrence pathologically and clinically (n=205) after transurethral resection of urinary bladder (TURB) for bladder cancer. CT urography protocol consisted of urothelial phase (70-80 seconds after injection of contrast material) and excretory phase. Two radiologists independently reviewed these two phases of CT urography and evaluated suspects of recurred bladder cancer.

The sensitivity was higher for the urothelial phase (reader 1, 74.6 %; reader 2, 55.2 %) than excretory phase for detection of the recurred bladder cancer, in all of both readers (reader 1, 34.3 %; reader 2, 32.8 %). The specificity was a little higher for excretory phase (reader 1, 95.1 %; reader 2, 93.2 %) than urothelial phase (reader 1, 80.5 %; reader 2, 90.7 %). The AUCs of ROC analysis were larger for urothelial phase (reader 1, 0.755; reader 2, 0.812) than excretory phase (reader 1, 0.633; reader 2, 0.650).

The urothelial phase of CT urography shows relatively high diagnostic performance in detection of recurrence of bladder cancer than excretory phase. 

In patients with routine follow up after TURB, Radiation reduction was possible by CT urography without excretory phase.

Shim, Y, Choi, H, Cho, K, Diagnostic Efficacy of Urothelial Phase of CT Urography for Detection of Recurred Bladder Cancer after Transurethral Resection of Urinary Bladder (TURB).  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14013157.html