2181: The possibilities of 3D sonography in diagnosis and staging of urinary bladder cancer

Abstract

Objectives: Transrectal and transvaginal (for women) sonography is standard part of complex examination in patients with urinary bladder cancer (UBC). The method allows to visualize three layers of urinary bladder wall, paravesical structures and tumor invasion depth. Investigation goal was to reveal the possibilities of sonography with three-dimensional reconstruction in estimation of invasion depth in cases with UBC. Methods: Transrectal or transvaginal sonography with three-dimensional reconstruction was performed in 40 patients with UBC. 3D US angiography was used in all cases. We studied tumors quantity, their location and invasion depth. All diagnoses were confirmed morphologically. Results: Overall sensitivity of both methods in disclosure of tumors was 95%. There were difficulties and mistakes if tumor size was less then 0,4 cm. Sensitivity of both methods (standard investigation and 3D sonography) for invasion depth detection was the same: 85% in T1–T2 stage, 94% in T3 stage and 100% in T4 stage. However, three-dimensional model is more visual and provides showing any cut of tumor in any time. Conclusions: The possibilities of sonography with three-dimensional reconstruction and standard sonography in patients with UBC are the same. However, the method is more visual and may be useful in surgery treatment planning.