Computerized tomography virtual endoscopy in evaluation of upper urinary tract tumors: initial experience

Area of Science:

• Urology
• Medical Imaging
• Oncology

Background:

• Hematuria is a common symptom requiring thorough investigation for upper urinary tract tumors.
• CT-urography is a standard imaging modality, but its sensitivity for detecting subtle urothelial lesions can be limited.

Purpose of the Study:

• To evaluate the added value of CT virtual endoscopy (VE) when integrated with CT-urography for diagnosing upper urinary tract tumors in patients presenting with hematuria.

Main Methods:

• A cohort of 14 patients with hematuria and high risk for transitional cell carcinoma underwent a comprehensive workup including CT-urography with VE.
• Results from CT-urography and VE were correlated with pathological findings from surgical specimens or ureteroscopy biopsies.

Main Results:

• CT virtual endoscopy identified additional upper urinary tract tumors not detected by standard CT-urography alone.
• VE demonstrated findings suggestive of malignancy in two patients, which were confirmed by biopsy and/or surgery.
• VE also accurately diagnosed benign conditions like inflammation and fibrosis, correlating well with ureteroscopic findings.

Conclusions:

• CT virtual endoscopy serves as a valuable adjunct to CT-urography for comprehensive upper urinary tract evaluation in patients with suspected tumors.
• Integrating VE may improve diagnostic accuracy and potentially decrease the necessity for invasive fiberoptic ureteroscopy.