Role of Multisclice and Virtual Cystoscopy Versus Ultrasound and Color Doppler : Study in Evaluation of Urinary Bladder Neoplasms

Abstract

Introduction: the virtual cystoscopy and the color Doppler examinations are good modalities in assessment of the urinary bladder neoplasms. This study is done to assess the accuracy of CTVC and color Doppler ultrasound in detection of the urinary bladder neoplasms. Patients and methods: The examination was done between June 2010 and December 2012 on 60 patients known or suspected to have urinary bladder neoplasm. They were examined using CTVC and color Doppler ultrasound. Bladder scanned using multislice CT at a slice thickness of 1 mm. The data were transferred to a workstation for interactive navigation. Findings obtained from CTVC and ultrasound were compared with results from conventional cystoscopy and with pathological findings. Results: By the conventional cystoscopy; the 43 patients in the group A showed 53 lesions. There were (35/43 patients) with single lesion while there were (8/43 patients) more than one lesion. While the other 17 patients in group B showed 11 patient with no focal lesions and 6 patients with 6 focal lesions. By virtual cystoscopy; 56 lesions were detected in both groups; 51 plus 5 lesions in group A and B respectively. There were 3 false negative lesions with a failure rate of 3/56. By ultrasound; 56 lesions were detected in both groups; 53 plus 3 lesions respectively. So in virtual cystoscopy and ultrasound the results were as follows: positive predictive values: 100%; negative predictive value: 78.6 %; sensitivity: 94.9%; specificity: 100% Conclusion: Although the definitive diagnosis of some suspected urinary bladder tumors is only possible with conventional cystoscopy and biopsy, CTVC and color Doppler ultrasound are a minimally or non-invasive techniques which provide beneficial information about urinary bladder lesions.