Virtual cystoscopy: the evaluation of bladder lesions with computed tomographic virtual cystoscopy
DOI:
https://doi.org/10.5489/cuaj.557Abstract
Purpose: Our objective was to assess the accuracy of computed
tomographic virtual cystoscopy (CTVC) in the detection of urinary
bladder lesions.
Methods: Twenty-five patients were examined using CTVC. Bladder
scanned using multislice CT at a slice thickness of 1 mm. The data
were transferred to a workstation for interactive navigation using
surface rendering. Findings obtained from CTVC were compared
with results from conventional cystoscopy and with pathological
findings.
Results: Thirty-eight lesions were identified. The smallest was
0.2 × 0.3 cm; the largest was 7 × 4.5 cm. Both CTVC and conventional
cystoscopy were used. Conventional cystoscopy detected
the same number of lesions that were detected by CTVC. On
morphological examination, 26 of the lesions were polypoid, 7
were sessile and 5 were bladder wall-thickening. While one of the
polypoid lesions was reported as an inverted papilloma, 2 of the 5
lesions that were identified as wall-thickening were malignant and
3 were benign. The sensitivity of using CTVC to identify neoplasias
was 100%; the accuracy was 89%.
Conclusion: Although the definitive diagnosis of some suspected
urinary bladder tumours is only possible with conventional cystoscopy
and biopsy, CTVC is a minimally invasive technique which
provides beneficial information about urinary bladder lesions.
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