CEUS in the differentiation between low and high-grade bladder carcinoma
Drudi FM, Di Leo N, Malpassini F, Antonini F, Corongiu E, Iori F. J Ultrasound. 2012 Sep 24;15(4):247-51. doi: 10.1016/j.jus.2012.09.002. Print 2012 Dec.

Source

Department of Radiological Sciences, University "La Sapienza", Rome, Italy.

Abstractin English, Italian

INTRODUCTION:

Bladder cancer ranks 4th overall in the number of newly diagnosed cancers and 10th in causes of cancer deaths. More than 90% of all cases of bladder cancer are transitional cell carcinoma (TCC). The goal of this study is to confirm the usefulness of low mechanical index contrast-enhanced ultrasonography (CEUS), also in association with time-intensity curves, in the differentiation between high- and low-grade bladder malignant lesions.

MATERIALS AND METHODS:

From February 2006 to February 2012 we recruited 144 patients. All patients underwent grayscale ultrasonography (US), color-Doppler ultrasonography (CDUS) and contrast-enhanced ultrasonography (CEUS). Subsequently all patients underwent cystoscopy and TURB.

RESULTS:

HISTOLOGICAL DIAGNOSES WERE: 88 high-grade carcinomas (61.1%), and 56 low-grade carcinomas (38.9%). Sensitivity and specificity of CDUS were 87.5% (126/144) and 60%, respectively. Sensitivity and specificity of CEUS were 90.9% and 85.7%, respectively. Sensitivity and specificity of TIC were 91.6% (132/144) and 85.7%, respectively.

DISCUSSION AND CONCLUSIONS:

CEUS is a reliable noninvasive method for differentiating low- and high-grade bladder carcinomas since it provides typical enhancement patterns as well as specific contrast-sonographic perfusion curves.