超声造影诊断原发性肝癌临床价值及与病理分化相关性研究
[Abstract]:objective
The purpose of this study was to investigate the characteristic features of contrast-enhanced ultrasonography (CEUS) in the diagnosis of primary hepatocellular carcinoma (PHC) and its correlation with pathological differentiation.
Data and methods
From January 2010 to December 2013, 472 cases of hepatic space-occupying lesions (lesions with a diameter of 0.6-8.4 cm and the largest diameter of lesions) were examined by contrast-enhanced ultrasonography (CEUS), including 308 males and 164 females, aged 23-78, with an average age of 50.7 (+ 15.3).
Ultrasound diagnostic instrument is Siemens Sequoia 512, probe 4C-1, frequency 1-4MHz, using contrast pulse sequencing (CPS) imaging technology; Philipsi U22 ultrasonic instrument, probe frequency 1-5MHz, with low mechanical index (0.04-0.10) pulse reverse harmonic imaging technology. NoVue Contrast Agent. Dynamic storage technology of real-time full-range video recording during the whole process of contrast-enhanced ultrasound. After contrast-enhanced, frame-by-frame analysis of contrast media in the lesion start enhancement time, peak time, start clearance time, lesion enhancement and clearance mode, morphology, etc. At the same time, contrast-enhanced ultrasound perfusion characteristics and enhancement mode were compared with their pathological results, contrast-enhanced diagnosis. The complete contrast-enhanced ultrasound was divided into three phases: arterial phase (10s-30s), portal phase (31s-120s) and delayed phase (121s-360s).
Result
In 1.472 cases of hepatic space occupying lesions, 267 cases were confirmed by pathology, 205 cases were benign tumors.
1.1 Contrast-enhanced ultrasonography of primary hepatocellular carcinoma (PHC) showed rapid global heterogeneous enhancement in the arterial phase, rapid clearance in the portal phase, shorter initial enhancement time, initial clearance time and total duration than benign tumors (P < 0.01). Strong, portal phase of rapid clearance; bile duct cell hepatocellular carcinoma mostly manifested as "fast in and out", arterial phase dendritic rapid enhancement, clearance time faster than hepatocellular carcinoma.
1.2. Most of the benign hepatic tumors were characterized by "slow in and slow out", "fast in and slow out", "no enhancement" and so on. The hepatic hemangioma was centripetal enhancement, focal nodular hyperplasia was radial or spring-like enhancement, but the clearance of late portal vein and delayed phase was slower than that of peripheral liver tissue. Synchronous tissue development.
2. contrast-enhanced ultrasound found and identified 4 types of blood supply for primary liver cancer.
2.1. Hepatic artery alone or hepatic artery blood supply as the main type, accounted for 79.8% (213/267) of the lesions were enhanced in the arterial phase, the rapid filling in a spherical shape, portal phase hepatic parenchyma began to strengthen, lesions began to clear quickly, showed isoechoic or hypoechoic, delayed lesions echo lower than the surrounding liver tissue.
2.2 The hepatic artery and portal vein double blood supply type, accounting for 13.5% (36/267) of the lesions in the arterial phase began to enhance, the hepatic parenchyma in the portal phase began to strengthen, and the lesions continued to strengthen, the delayed lesions began to clear slowly.
2.3. The hepatic artery and portal vein had double blood supply and arteriovenous fistula, accounting for 5.2% (14/267). The lesions in the arterial phase began to strengthen, and the lesions in the portal phase continued to strengthen. The lesions in the delayed phase were always developed synchronously with the surrounding liver tissue due to the presence of arteriovenous fistula.
2.4. Portal vein blood supply alone or portal vein blood supply as the main type, accounting for 1.5% (4/267) of the appearance of intra-arterial contrast media enhancement was not obvious, intra-portal contrast media began to slowly enhance, early delayed peripheral liver tissue synchronous imaging, late delayed lesions contrast media lower than peripheral liver tissue.
3. The sensitivity, specificity and accuracy of contrast-enhanced ultrasound in the diagnosis of primary hepatocellular carcinoma were 98.9% (264/267), 95.6% (196/205), 97.4% (460/472), Jordan index, positive likelihood ratio, negative likelihood ratio were 0.94, 22.5 and 0.012, respectively.
4. The correlation between the clearance time of contrast-enhanced ultrasound and the degree of pathological differentiation was statistically significant (P<0.05).
conclusion
Contrast-enhanced ultrasonography can significantly improve the accuracy of diagnosis and differential diagnosis of benign and malignant liver tumors, and determine the blood supply classification of hepatocellular carcinoma. It is of great value for the correct early diagnosis and treatment of hepatocellular carcinoma, and for the effective standardization of treatment.
【学位授予单位】:安徽医科大学
【学位级别】:硕士
【学位授予年份】:2014
【分类号】:R445.1;R735.7
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