Contrast enhanced ultrasound diagnosis of poor differentiated cholangiocarcinoma
- VernacularTitle:超声造影诊断低分化胆管细胞癌
- Author:
Xiaoli HUANG
;
Daozhong HUANG
- Publication Type:Journal Article
- Keywords:
Ultrasonography;
Contrast agent;
Poorly differentiated;
Cholangiocarcinoma
- From:
Chinese Journal of Medical Imaging Technology
2010;26(1):93-95
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the value of contrast enhanced ultrasound (CEUS) in diagnosing poor differentiated cholangiocarcinoma. Methods Sonograms of 11 patients with pathologically confirmed poor differentiated cholangiocarcinoma were retrospectively analyzed. The size, boundary, shape, echo, blood distribution and characteristics of the enhancement duration were observed. Results All lesions presented irregular shape (100%), most (9/11, 81.82%) with indefinite boundary, some (6/11, 54.55%) with low echo. No blood flow signal was found in the interior of masses, while grade 1 blood flow signal was detected in periphery of the lesions. Resistance index (RI) was ≥0.6 in spectral Doppler in 7 (63.64%) lesions. Marginal rim-like hyperechoic enhancement in the arterial phase was found without centripetal filling in all 11 patients, marginal rim-like hypoechoic enhancement was observed, but being hyperecho compared with interior part without medium in delayed phase. Conclusion The contrast-enhancement modality of poor differentiated cholangiocarcinoma is characteristic. Combined with two-dimensional ultrasonography and color Doppler ultrasound, the diagnostic rate will be improved.
