Elastographic Analysis of Urothelial Bladder Tumours

Summary

The preoperative evaluation of bladder tumors includes either computed tomography, magnetic resonance imaging in B-mode, or a cystoscopy in the absence of a radiological diagnosis. The diagnosis is confirmed after a transurethral resection of the bladder (TURB) and a histopathological analysis. Ultrasound is a non-invasive imaging technique that uses high-frequency sound waves to produce images of internal structures. Conventional ultrasound in B-mode can only provide details about the tumor's number, size, and location. Elastography uses ultrasound imaging techniques to examine the stiffness of a tissue. Using the Aixplorer system many recently published papers suggested that ShearWave Elasticity (SWE) imaging, enables the differentiation of low- from high-grade breast tumors by assessing the elasticity of the tissue. Investigators intend to evaluate the stiffness of bladder tumors with ultrasound elastography in comparison with cystometry parameters and tumoral grade.

Eligibility

Inclusion Criteria:

* Age \> 18 years
* Bladder tumour visualised on abdominal ultrasound or estimated to be more than 2 cm in diameter by fibroscopy or CT scan
* Primary resection

Exclusion Criteria:

* BMI \> 30 kg/m2,
* Bladder catheterisation,
* Previous bladder or prostate surgery,
* Previous intravesical instillation (BCG / Ametycine)
* Previous pelvic radiotherapy,
* Person having objected to data processing.

Conditions3

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