2.Ultrastructure of chronic liver diseases: From light to electron microscopy.
The Korean Journal of Hepatology 2002;8(1):112-123
No abstract available.
Chronic Disease
;
Human
;
Liver/pathology/*ultrasonography
;
Liver Diseases/*pathology
3.Ultrastructure of Chronic Liver Diseases ; Kupffer Cells of the Hepatic Sinusoids.
The Korean Journal of Hepatology 2002;8(4):505-514
No abstract available.
Human
;
Kupffer Cells/*ultrasonography
;
Liver Diseases/*pathology
5.Role of Doppler Ultrasonography in Portal Hypertension.
The Korean Journal of Gastroenterology 2006;48(3):215-217
No abstract availble.
Blood Flow Velocity
;
Humans
;
Hypertension, Portal/*ultrasonography
;
Liver Cirrhosis/pathology
;
Portal Vein/ultrasonography
;
*Ultrasonography, Doppler
6.Ultrastructure of Chronic Liver Diseases: Endothelial Cells of the Hepatic Sinusoids.
The Korean Journal of Hepatology 2002;8(2):231-244
No abstract available.
Animals
;
Chronic Disease
;
Endothelium, Vascular/*ultrasonography
;
Human
;
Liver/*blood supply
;
Liver Diseases/*pathology
;
Microcirculation/ultrasonography
;
Rats
7.Pseudocapsule of hepatocellular carcinoma: CT and US versus pathologic correlation.
Young Kuk CHO ; Ku Sub YUN ; Moon Gyu LEE ; Yong Ho AUH ; Ghee Young CHOE ; Young Hwa CHUNG ; Sung Gyu LEE
Journal of the Korean Radiological Society 1993;29(3):464-470
The encapsulated hepatocellular (HCC) is a pathologic subtype of HCC. It is a well defined tumor that tends to grow slowly, and has a better prognosis than any other gross forms of HCC. Twenty surgically resected HCC were evaluated retropectively to correlate the thickness of pseudocapsules in pathology with those in computed tomography and ultrasound. At a histologic examination, pseudocapsules of seven cases were composed of two layers, an inner compact fibrous zone and outer loose fibrous zone interlaced with compressed liver parenchyma containing small vessels and newly formed bile ducts. Sonographic thickness and pathologic measurements of pseudocapsule relatively well correlated, but the former slightly overestimated the thickness of pathologic pseudocapsule (r=0.825, y=2.56x-1.23, P<0.05). On the other hand, thickness in CT and pathologic measurement did not correlate well. Thirteen cases showed one layer of pseudocapsule in which two cases were composed of thin layer of compact fibrosis and eleven cases composed of loose fibrosis. There were poor correlations in this group between thickness of pseudocapsules in pathology and those in images. Image overtly overestimated the thickness of the pseudocapsules in pathology. In conclusion, radiologic pseudocapsule of HCC may represent the compressed liver parenchyma as well as the fibrous pseudocapsule.
Bile Ducts
;
Carcinoma, Hepatocellular*
;
Fibrosis
;
Hand
;
Liver
;
Pathology
;
Prognosis
;
Ultrasonography
8.Pseudocapsule of hepatocellular carcinoma: CT and US versus pathologic correlation.
Young Kuk CHO ; Ku Sub YUN ; Moon Gyu LEE ; Yong Ho AUH ; Ghee Young CHOE ; Young Hwa CHUNG ; Sung Gyu LEE
Journal of the Korean Radiological Society 1993;29(3):464-470
The encapsulated hepatocellular (HCC) is a pathologic subtype of HCC. It is a well defined tumor that tends to grow slowly, and has a better prognosis than any other gross forms of HCC. Twenty surgically resected HCC were evaluated retropectively to correlate the thickness of pseudocapsules in pathology with those in computed tomography and ultrasound. At a histologic examination, pseudocapsules of seven cases were composed of two layers, an inner compact fibrous zone and outer loose fibrous zone interlaced with compressed liver parenchyma containing small vessels and newly formed bile ducts. Sonographic thickness and pathologic measurements of pseudocapsule relatively well correlated, but the former slightly overestimated the thickness of pathologic pseudocapsule (r=0.825, y=2.56x-1.23, P<0.05). On the other hand, thickness in CT and pathologic measurement did not correlate well. Thirteen cases showed one layer of pseudocapsule in which two cases were composed of thin layer of compact fibrosis and eleven cases composed of loose fibrosis. There were poor correlations in this group between thickness of pseudocapsules in pathology and those in images. Image overtly overestimated the thickness of the pseudocapsules in pathology. In conclusion, radiologic pseudocapsule of HCC may represent the compressed liver parenchyma as well as the fibrous pseudocapsule.
Bile Ducts
;
Carcinoma, Hepatocellular*
;
Fibrosis
;
Hand
;
Liver
;
Pathology
;
Prognosis
;
Ultrasonography
9.Synchronous multicentric small hepatocellular carcinomas: defining the capsule on high-frequency intraoperative ultrasonography with pathologic correlation.
Jae Hong AHN ; Dae Woon EOM ; Dae Shick RYU ; Man Soo PARK ; Seung Mun JUNG ; Kun Moo CHOI ; Gab Jin CHEON ; Soo Jung CHOI ; Hyuk Jai JANG
Ultrasonography 2016;35(4):335-344
PURPOSE: The aim of this study was to define the capsules of synchronous multicentric small hepatocellular carcinomas (HCCs) with use of high-frequency intraoperative ultrasonography (IOUS). METHODS: Among the 131 consecutive patients undergoing hepatic resection and high-frequency IOUS for HCC, 16 synchronous multicentric small HCCs in 13 patients were histologically diagnosed in the resected specimens. High-frequency IOUS and pathologic findings of these lesions were compared, with particular focus on the presence and appearance of the capsule in or around each lesion. RESULTS: Synchronous multicentric small HCCs were pathologically classified into distinctly nodular (n=12) or vaguely nodular (n=4) types. All 12 distinctly nodular HCCs including six subcentimeter lesions showed detectable capsules on high-frequency IOUS and pathology. The capsules appeared as a hypoechoic rim containing hyperechoic foci (n=6), hypoechoic rim (n=5), or hyperechoic rim (n=1) with varying degrees of coverage around each lesion. Histologically, the capsules were composed of a combination of one to four layers consisting of a fibrous capsule, peritumoral fibrosis, prominent small vessels, and entrapped hepatic parenchyma. CONCLUSION: Synchronous multicentric small HCCs with distinctly nodular type, even at subcentimeter size, can show capsules with varying coverage and diverse echogenicity on high-frequency IOUS.
Capsules
;
Carcinoma, Hepatocellular*
;
Fibrosis
;
Humans
;
Liver Neoplasms
;
Pathology
;
Ultrasonography*
10.Value of a virtual hepatic segment model in assisting in the ultrasonic localization of intrahepatic lesions.
Guo CHENG ; Yan-li GUO ; Chun-yan ZHONG ; Li-wen TAN ; Shao-xiang ZHANG
Chinese Medical Journal 2013;126(23):4417-4422
BACKGROUNDDuring scanning of the right hypochondrium and right intercostal regions with an ultrasonic transducer, several ultrasonic images of oblique sections are obtained. It is still a challenge for ultrasonography to divide these non-conventional sections into an accurate hepatic segmentation pattern. The aim of this research was to investigate the value of the virtual hepatic segment model (VHSM) in assisting the ultrasonic localization of space-occupying hepatic lesions.
METHODSVHSM was constructed via 3D reconstruction according to the first Chinese visible human dataset. Preoperative ultrasonography, contrast-enhanced CT scan and VHSM techniques were performed in 100 patients with space-occupying focal lesions in the liver parenchyma for segmental localization. The results of these three techniques were compared with the operative findings.
RESULTSVHSM was successfully detected on 2D sectional images by 3D reconstruction through surface rendering and volume rendering. The model could simulate ultrasonic directions to conduct a virtual dissection on any section plane, and fine liver segmentation could be displayed in any virtual plane. In 100 patients, there were 112 liver space-occupying focal lesions distributed in 148 liver segmentations. Regarding the positioning accuracies for lesions of different sizes and the lesion segmental distribution accuracies estimated using the three methods mentioned above, ultrasonography exhibited a significantly lower accuracy than VHSM for the segmental localization of lesions (P < 0.05), and contrast-enhanced CT was not significantly different from ultrasonography plus VHSM (P > 0.05).
CONCLUSIONVHSM increased the accuracy of ultrasonic localization of space-occupying hepatic lesions, particularly in hepatic hypovascular regions.
Computer Simulation ; Humans ; Liver ; diagnostic imaging ; pathology ; Radiography ; Ultrasonography