Purpose: We examined the characteristics of the images by MRI and abdominal ultrasound (US) of 13 cases of primary liver cancer that CoCC components were identified in these surgical resection specimens.
Methods:Of the liver tumor surgical resection was performed in the period of September 2011 from March 2008, 13 cases MRI examination and US was enacted prior to surgery, CoCC component has been pathologically confirmed (all males, 65.6±10.7 years average age, 27.1±16.9 mm average tumor diameter, B chronic hepatitis: 5 cases, B cirrhosis type 3, for example, C-type liver cirrhosis: one case, alcohol (AL) cirrhosis: one case, fatty liver (FL): three cases):
We have to evaluate the nature and form of the tumor in the B-mode image of US, which came into force prior to surgery. In addition, we evaluated the contrast behavior of tumor contrast US images used in the Sonazoid
® (CEUS). We have to evaluate the amount of liver cells and contrast the attitude of the tumor enhanced MRI images using Gd-EOB-DTPA in (EOB-MRI), the signal strength T1WI, T2WI, DWI of a simple MRI images. US image is a two radiologists and one name Gastroenterology doctor, MRI images were evaluated in addition interpretation findings of two radiologists.
Results and Discussion: US imaging findings are summarized as follows:the first ((1)), Notch-shape border , the second ((2)), Visualization of dendritic vascular structure.and third ((3)), persistent contrast effct, the fourth ((4)), Clear images of defect in post vascular phase.
MRI imaging findings are summarized as follows: the fifth ((5)), Prolonged contrast effect, the sixth ((6)), Clear images of defect in hepatobiliary-phase. these common imaging findings are summarized as follows:the seventh ((7)), Visualization of portal vein penetrates inside of the tumor. (1), (2) and (7) commonly appear in these images, and are considered the findings that reflect the existing structure such as portal area in the tumor/peripheral zone. As for (3), “persistent contrast effect”,it can be attributed to the residual existing portal area, On the other hand, as for (5),” prolonged contrast effect”, it reflects abundant fibrous stroma in the center of lesion ,and is useful in the distinguishing CoCC from HCC. (4) and (6) are considered the findings that reflect the cellular dedifferentiation ,these imaging findings are useful in the differentiation of early hepatocellular carcinoma (eHCC).
Conclusion: Since US has higher resolutions than MRI, it captured differences in pathological tissue properly. It was found that US is particularly useful test for diagnosing CoCC through the morphological diagnosis such as an evaluation of the contour and hemodynamic diagnosis with the patterns of contrast such as visualization of dendritic vascular structure.
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