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  • 1
    Electronic Resource
    Electronic Resource
    Lobar atrophy of the liver (1998)
    Springer
    Abdominal imaging 23 (1998), S. 150-153 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Ultrasound—Doppler—Liver—Anatomy— Portal vein.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Lobar atrophy of the liver due to causes other than liver tumor or liver cirrhosis is a relatively rare pathological condition, and there are only a few reports in the literature. We report six such cases and try to evaluate the relationship between lobar atrophy and portal flow disturbance. The patients could be divided into two groups according to the site of the atrophy: those with atrophy of the left lobe (two cases) and those with atrophy of the right lobe (four cases). The two cases with atrophy of the right lobe had hepatholithiasis in the involved segments, but the cause was not determined in the remaining four cases. In all six cases, portal flow disturbance was noted, including invisibility of the portal vein in four cases, narrowing in one case, and portal thrombus in one case. Collateral circulation was not recognized in any of our cases. Of interest is the mode of lobar atrophy. Atrophy of the right lobe was always associated with marked enlargement of the left lobe, but that of the left lobe did not induce an enlargement of the right lobe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900309
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  • 2
    Electronic Resource
    Electronic Resource
    Small bowel varices: report of two cases (1998)
    Springer
    Abdominal imaging 23 (1998), S. 354-357 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Portal vein—Collateral—Portal hypertension—Doppler—Small bowel.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Two cases of small bowel (S-B) varices associated with portal hypertension, one with liver cirrhosis and one with portal thrombus, are reported. Detection of S-B varices has been a challenging task and several invasive diagnostic techniques have been used for this purpose. However, in our cases, color Doppler sonography revealed the S-B varices supplied by the superior mesenteric vein and draining to the iliac (one case) or ovarian vein (other case), which helped to establish an early appropriate diagnostic and treatment plan.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900360
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Hepatic hemangioma with arterioportal shunts (1999)
    Springer
    Abdominal imaging 24 (1999), S. 42-46 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Liver tumor—Hemangioma—Doppler—Arterioportal shunt.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Color Doppler sonograms and angiographic findings in 23 hepatic hemangioma patients were compared to clarify how arterioportal shunts influence color Doppler findings of hepatic hemangiomas. The results of our study showed that the presence of arterioportal shunts (six cases) gave rise to large feeding arteries (five cases), multiple intratumoral flows (six cases), and reversal of portal flow within (five cases) or around (four cases) the tumor. These color Doppler findings mimicked hypervascular malignant tumors. Knowledge of such unusual color Doppler findings in hepatic hemangiomas may help in avoiding misinterpretations of color Doppler sonograms. RID=""ID=""〈e5〉Correspondence to:〈/e5〉 H. Naganuma
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900438
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  • 4
    Electronic Resource
    Electronic Resource
    Sonographic and color Doppler findings of rupture of liver tumors (1998)
    Springer
    Abdominal imaging 23 (1998), S. 587-591 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Ultrasound—M-mode—Doppler—Liver tumor—Rupture—Ascites.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. We present six cases of ruptured liver tumor (hepatocellular carcinoma, five cases; liver metastasis, one case) in which gray-scale sonography revealed an ascites containing constantly moving dense high-echo spots, leading to a high suspicion of acutely developing hemoperitoneum. Color Doppler sonography helped in detecting the rupture site by demonstrating a high-velocity jet flow from it. Although four of six patients were dead within 3 months, detection of the rupture site by color Doppler sonography made the initial transarterial embolization therapy easy and prompt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900409
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Sonography of pneumatosis cystoides intestinalis (1999)
    Springer
    Abdominal imaging 24 (1999), S. 559-561 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Bowel—Pneumatosis—Ultrasound— Doppler.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Pneumatosis cystoides intestinalis (PCI) is a relatively rare benign condition, and its sonographic findings have rarely been reported. We report on four cases of PCI in which sonography showed multiple immobile linear or spotty high echoes in the thickened colonic wall. These sonographic findings were more clearly visualized by using high-frequency probes and helped in establishing the diagnosis. In addition, color Doppler sonography confirmed the absence of portal gas and helped rule out fulminant PCI. When encountering patients with abundant abdominal gas, the possibilty of PCI should be considered and the colonic wall and the portal vein should be meticulously observed by high-frequency probe and color Doppler sonography to prevent a delay in the diagnosis and to improve patient management.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900562
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Retroperitoneal liposarcoma: sonographic findings (2000)
    Springer
    Abdominal imaging 25 (2000), S. 554-558 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Ultrasound—Retroperitoneum—Neoplasm—Liposarcoma—Fat.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This study, based on sonographic (US) results of 10 cases with histologically proven retroperitoneal liposarcoma (eight well-differentiated and two pleomorphic types), shows that the presence of fine echogenic lines within the tumor is a useful sign for diagnosing a well-differentiated liposarcoma. Presence of numerous fine fibrous septa in the lipomatous tumor tissue is thought to be responsible for this interesting phenomenon. Of interest is the fact that the direction of these lines changed according to the probe format used: parallel horizontal lines when using a linear probe and concentric lines converging toward the probe when using a sector or curved linear probe. In contrast, pleomorphic liposarcoma does not show this US sign. Knowledge of these US findings is useful for the diagnosis of retroperitoneal liposarcoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/s002610000091
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  • 7
    Electronic Resource
    Electronic Resource
    Splenic artery aneurysm: value of color Doppler and the limitation of gray-scale ultrasonography (1998)
    Springer
    Abdominal imaging 23 (1998), S. 627-632 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Color Doppler—Splenic artery—Aneurysm—Ultrasound—Collaterals (splenorenal shunt).
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: To reevaluate the advantages and limitations of gray-scale and color Doppler sonography in the diagnosis of splenic artery (Sp-A) aneurysm. Methods: We reviewed the gray-scale and color Doppler sonograms of five cases with Sp-A aneurysm (four patients with portal hypertension and one patient without portal hypertension). Color Doppler sonography was performed in all five patients, and power Doppler sonography was performed in three. Results: Gray-scale sonography failed to detect the aneurysm in four of five cases because of a surrounding splenorenal (Sp-R) shunt in three patients and marked calcification of the aneurysmal wall in one patient. Pulsed Doppler sonography showed a slightly turbulent pulsatile flow along the aneurysmal wall, which immediately led to the diagnosis in four cases, including the three cases with Sp-R shunt. In one case, color Doppler sonography failed to detect the aneurysm because of a markedly calcified aneurysmal wall, although power Doppler sonography could visualize the aneurysm. Conclusions: Gray-scale sonography is not a useful diagnostic tool for Sp-A aneurysm. Clinicians should use color Doppler sonography in the evaluation of the splenic hilus in patients with Sp-R shunt to find a small Sp-A aneurysm. The addition of power Doppler sonography is helpful in visualizing calcified Sp-A aneurysms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900418
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Mesenteric cyst: sonographic findings (2000)
    Springer
    Abdominal imaging 25 (2000), S. 306-310 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Cyst—Doppler—Mesentery—M-mode— Ultrasound.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Mesenteric cyst (MC) is a relatively rare disease, and its sonographic characteristics have not been sufficiently analyzed. Methods: We studied the sonographic findings of eight patients with MC, with attention paid to its size, shape, internal echoes, and especially the presence or absence of lateral shadowing and the mode of back echoes. In four cases, the sound velocity and acoustic impedance of cystic fluid were also measured. The mode of blood flow was evaluated by color Doppler sonography. Results: Six cases showed an oval or comma-shaped mass. Internal echoes were present in six cases, and two of them showed a pseudosolid pattern. In these cases, M-mode sonography confirmed the movement of these internal echoes. Only one case showed a posterior echo enhancement, and no case showed lateral shadowing. Sound velocity measured in four cases was 1515–1537 m/s, with an acoustic impedance of 1.550–1.576 kg/m2/s. No blood flow signals were obtained from the lesion. Conclusion: MC exhibits so many patterns on ultrasound that we should consider the possibility of MC when encountering an avascular oval mesenteric mass.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002610000037
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  • 9
    Electronic Resource
    Electronic Resource
    Chilaiditi syndrome: sonographic findings (2000)
    Springer
    Abdominal imaging 25 (2000), S. 397-399 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Ultrasound—Colon—Gas—Chilaiditi syndrome—Pneumoperitoneum.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background and methods: Sonographic (US) findings of Chilaiditi syndrome have been rarely reported in the literature. We reviewed 18 cases of Chilaiditi syndrome to pinpoint its US pattern. Results: (1) US showed gas echoes of different sizes superimposed over the entire liver in two cases and over the right hepatic lobe in six cases, leading to a high suspicion of Chilaiditi syndrome. (2) US showed a small gas echo in the hepatodiaphragmatic space, mimicking pneumoperitoneum in eight cases. In this instance, altering the patient's position allowed for confirmation of the lack of a change in the location of the gas echo, unlike cases of pneumoperitoneum. (3) The hepatic surface appeared as a hyperechoic mass in two cases. Conclusion: Knowledge of US patterns of Chilaiditi syndrome helps avoid confusion with pneumoperitoneum or hepatic masses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/s002610000020
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  • 10
    Electronic Resource
    Electronic Resource
    Sonographic findings of anomalous position of the gallbladder (1998)
    Springer
    Abdominal imaging 23 (1998), S. 67-72 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Ultrasound—Liver—Gallbladder—Anatomy—Malposition.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Anomalous position of the gallbladder is relatively rare and has been reported only in isolated case reports. We tried to determine its ultrasound (US) findings on the basis of 18 such patients. In the left-side gallbladder group (nine patients), the gallbladder was imaged as an oval cystic mass in front of the pancreas. In all patients, the narrow neck of the gallbladder was clearly detected by US in the usual location before the main portal vein. Four of nine patients had small gallbladder stones. The retrohepatic gallbladder group (four patients) showed marked atrophy of the right lobe of the liver. Two patients had multiple gallstones in the bile ducts of the right lobe. All patients in the suprahepatic retrohepatic gallbladder group (four patients) were cirrhotic, and the anterior segment of the right lobe was markedly atrophied. In the intercostal scan, the gallbladder mimicked a perihepatic fluid. In the floating gallbladder group (one patient), the gallbladder was imaged as a cystic mass in the anterior abdominal wall. Surgical intervention showed a severely inflamed gallbladder, with small stones adhered into the anterior abdominal wall and partially ruptured. Knowledge of the wide range of US findings of malposition of the gallbladder helps in avoiding misdiagnosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900287
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    Paper (German National Licenses)
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