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  • 1
    Digitale Medien
    Digitale Medien
    Plasma cell granuloma involving the tracheobronchial angle in a child: A case report (1995)
    Springer
    Pediatric radiology 25 (1995), S. 204-205 
    Details
    ISSN: 1432-1998
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The radiologic findings of plasma cell granuloma involving the left tracheobronchial angle in a child are described. The left lung volume was decreased on chest radiograph, and CT scan showed an intraluminal mass.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02021536
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  • 2
    Digitale Medien
    Digitale Medien
    Cystic intrapulmonary lymphangioma: HRCT findings (1995)
    Springer
    Pediatric radiology 25 (1995), S. 206-207 
    Details
    ISSN: 1432-1998
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We report a rare case of cystic intrapulmonary lymphangioma involving the left lung, which presented with pneumothorax and respiratory distress in a 6-month-old infant. Chest radiographs showed a multicystic lesion in the left lung mimicking the features of congenital cystic adenomatoid malformation of the lung. The lesion appeared on high-resolution CT (HRCT) as a multiseptate, air-filled cystic lesion in the left hilar area. Associated HRCT findings were thickening of interlobular septa and bronchovascular bundles in the left lung and the presence of peripheral pulmonary vessels within cystic lesions in the apex of the left lung. HRCT findings correlated well with histopathologic findings. We suggest that these associated findings may be helpful in distinguishing this condition from other cystic lung diseases and that this entity should be included in the differential diagnosis of multicystic lung lesions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02021537
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  • 3
    Digitale Medien
    Digitale Medien
    Cystic peripheral cholangiocarcinoma: sonography and CT (1995)
    Springer
    Abdominal imaging 20 (1995), S. 131-132 
    Details
    ISSN: 1432-0509
    Schlagwort(e): Liver, cholangiocarcinoama ; Liver, US studies ; Liver, CT studies
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract A case of cystic peripheral cholangiocarcinoma is presented. Both sonography and computed tomography (CT) demonstrated a large intrahepatic cystic neoplasm containing an enhancing solid portion. Despite the very rare incidence of this tumor, we believe that cystic degeneration of peripheral cholangiocarcinoma should be considered with these radiologic findings.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00201520
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  • 4
    Digitale Medien
    Digitale Medien
    Focal hepatic nodules after transcatheter oily chemoembolization; detection with spiral CT versus conventional CT (1996)
    Springer
    Abdominal imaging 21 (1996), S. 33-36 
    Details
    ISSN: 1432-0509
    Schlagwort(e): Key words: Liver〈+〉—〈+〉CT〈+〉—〈+〉Neoplasms〈+〉—〈+〉Diagnosis.
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract. Background: The objective of this study was to determine if spiral computed tomography (CT) results in increased rate of detection of focal hepatic nodules containing iodized oil after transcatheter oily chemoembolization when compared with conventional CT. Methods: Spiral CT with single 24-s breath-hold technique was compared with conventional sequential CT in 42 patients with suspected hepatocellular carcinomas. Two sets of CT scans obtained after transcatheter oily chemoembolization were independently reviewed by two radiologists. The slice thickness was 10 mm for both data sets. The number and sizes of focal hepatic nodules containing iodized oil were documented. All 42 patients had at least one hepatic nodule. The lesion size varied from 2 mm to 12 cm. Results: In six of the 42 patients, more hepatic nodules could be identified on spiral CT compared with conventional CT. When scans with spiral CT were used, 107 nodules were detected, whereas 98 nodules were detected with conventional CT. Overall, nine (9%) more nodules were detected with spiral CT (〈+〉p= .002). If lesions larger than 2 cm are excluded, nine (15%) more lesions were detected with spiral CT (〈+〉p= .002). Conclusion: Spiral CT results in increased rate of detection of focal hepatic nodules after transcatheter oily chemoembolization, particularly in lesions smaller than 2 cm.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002619900005
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  • 5
    Digitale Medien
    Digitale Medien
    Iodized-oil retention within hepatic hemangioma:characteristics on iodized-oil CT (1996)
    Springer
    Abdominal imaging 21 (1996), S. 420-426 
    Details
    ISSN: 1432-0509
    Schlagwort(e): Key words: Angioma, gastrointestinal tract—Contrast media, fatty acid—Computed tomography.
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract. Objective: The purpose of this study was to describe the characteristic computed tomographic (CT) appearance of iodized-oil retention in hepatic hemangioma and to evaluate the duration of the retention of iodized oil on follow-up CT. Methods: Seventeen hepatic hemangiomas of 14 patients were studied with CT performed 1–3 weeks after injection of 2–9 ml of iodized oil (iodized-oil CT) for the characterization of focal hepatic lesions, which needed differential diagnosis with hepatocellular carcinoma in 10 patients, for therapy in two patients, and for chemoembolization therapy of accompanying hepatocellular carcinomas in two. Twelve patients had 1–7 follow-up CT scans within an interval of 1–38 months. Results: In all cases, iodized-oil CT showed iodized-oil retention within the tumor, regardless of tumor size, shape, location, and amount of injected iodized oil. The distribution was incomplete and predominantly peripheral in all cases. Central retention was also seen in seven cases, in which a relatively large amount of iodized oil was injected, but retention of iodized oil in the tumor was incomplete even in two cases in which a large amount of iodized oil was injected to relieve symptoms and in three cases in which prominent uptake of surrounding liver parenchyma was seen. Patterns of retention were predominantly spotty in five, predominantly nodular in four, and mixed in eight patients. Retention materials slowly washed out but persisted for at least 3 months and up to 38 months (mean = 18.1 months), and complete washout was not seen in any cases at follow-up CT. Conclusion: In all cases of hepatic hemangiomas, iodized oil was retained, and retention persisted over several months. Distribution and patterns of retention were characteristically peripheral, spotty, and nodular at iodized-oil CT. Knowledge of the iodized-oil CT appearance of hepatic hemangioma would be helpful to interpret follow-up CT studies of patients who have undergone iodized-oil chemoembolization procedures.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002619900096
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  • 6
    Digitale Medien
    Digitale Medien
    Peripheral cholangiocarcinoma: comparison of MRI with CT (1995)
    Springer
    Abdominal imaging 20 (1995), S. 357-360 
    Details
    ISSN: 1432-0509
    Schlagwort(e): Liver ; Cholangiocarcinoma ; CT ; Magnetic resonance ; Liver neoplasm
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract To evaluate the clinical utility of computed tomography (CT) and magnetic resonance imaging (MRI) in the diagnosis of peripheral cholangiocarcinoma of the liver, 11 patients with pathologically proven peripheral cholangiocarcinoma were examined with both CT and MRI. On CT scans in 10 cases, the tumors appeared as irregular, low-attenuation masses with a wide variation in heterogeneity. Contrast enhancement of the tumors was mild in nine cases and moderate in one case, at the periphery. Tumor was not identified in one case. On T1-weighted MRIs, the tumors showed low intensity in eight cases and isointensity in three cases. On T2-weighted images, the tumors showed high intensity in all 11 cases. Focal dilatation of the intrahepatic bile ducts around the tumor was seen in one case on MRIs and in four cases on CT scans. Portal vein invasion of the tumors was seen in one case, and lymphadenopathy was seen in four cases on both MRIs and CT scans. MRI was slightly superior to CT in detecting the tumors, was inferior to CT in delineating focal ductal dilatation around the tumors, and was equal to CT in assessing extent of the tumors.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00203371
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  • 7
    Digitale Medien
    Digitale Medien
    Castleman disease with renal amyloidosis: imaging findings and clinical significance (1995)
    Springer
    Abdominal imaging 20 (1995), S. 376-378 
    Details
    ISSN: 1432-0509
    Schlagwort(e): Amyloidosis ; Hamartoma ; Kidney ; Computed tomography ; Ultrasound
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We report two cases of renal amyloidosis associated with mesenteric and mediastinal Castleman disease of plasma cell type. Computed tomographic (CT) scan revealed a mesenteric mass with multiple nodal enlargement in one patient and a right paratracheal mass with irregular central calcifications in the second patient. Renal ultrasonography (US) showed increased echogenicity of the renal parenchyma with prominent medullas. Doppler waveform obtained in the kidney associated with mesenteric disease showed complete absence of diastolic flow signal, although it was normal in the patient with mediastinal disease. Recognition of Castleman disease as the cause of renal amyloidosis and the understanding of CT and US findings of this entity are important for the management, as well as its diagnosis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00203376
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  • 8
    Digitale Medien
    Digitale Medien
    Hepatic Hemangioma: Contrast-Enhancement Pattern during the Arterial and Portal Venous Phases of Spiral CT (1999)
    Springer
    Abdominal imaging 24 (1999), S. 262-266 
    Details
    ISSN: 1432-0509
    Schlagwort(e): Key words: Liver, CT—Liver, neoplasm—Hemangioma.
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The objective of the present study was to evaluate contrast-enhancement patterns of hepatic hemangioma according to size during hepatic arterial (30-s delay) and portal venous (65-s delay) phases of spiral computed tomography (CT). During a 10-month-period, 73 patients with 118 hemangiomas underwent two-phase spiral CT examination. The enhancement patterns of tumors were divided into four types based on the attenuation of surrounding liver parenchyma: peripherally nodular high, uniform high, iso, and low. The diameter of the tumors were 〈10 mm (n= 39), 11–20 mm (n= 33), and 〉21 mm (n= 46). Overall, the most common enhancement patterns of hemangioma were peripherally nodular high (66/118, 55.9%) during the arterial and portal venous phases. The second most common contrast-enhancement patterns of hemangioma were uniform high (15/118, 12.7%) during the arterial and portal venous phases. In tumors smaller than 20 mm, 11 (9.3%) had low-low attenuation and two (1.7%) had iso-low attenuation during the arterial and portal venous phases, respectively. In conclusion, at two-phase spiral CT, the most common contrast-enhancement patterns of hemangioma are peripherally nodular high and/or uniform high during the arterial and portal venous phases. However, hemangiomas smaller than 2 cm may have atypical enhancing patterns including low and iso-attenuation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002619900492
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  • 9
    Digitale Medien
    Digitale Medien
    Undifferentiated embryonal sarcoma of the liver treated with chemotherapy: CT imaging in four patients (1995)
    Springer
    Abdominal imaging 20 (1995), S. 133-137 
    Details
    ISSN: 1432-0509
    Schlagwort(e): Liver, neoplasms ; Liver, sarcoma ; Liver, CT
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Background: The purpose of this study was to describe the computed tomography (CT) findings of undifferentiated embryonal sarcoma after chemotherapy and to correlate the CT imaging findings with pathologic findings. Methods: Ten CT images obtained before and after chemotherapy in four patients with hepatic undifferentiated embryonal sarcoma were retrospectively reviewed and correlated with pathologic findings. Results: After chemotherapy, tumor volume decreased by 50–90% and initially nonresectable tumor or gross residual tumor was successfully excised in three patients. In all patients, enhancing peripheral solid portions and septations changed to low-attenuation areas, and in three patients increased or de novo calcifications were found at the periphery of the tumor. Resected pathologic specimen after chemotherapy showed well-encapsulated masses with central necrosis, fibrosis, and dystrophic calcifications. Conclusions: These CT findings will be useful in monitoring the treatment response of hepatic undifferentiated embryonal sarcoma during chemotherapy.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00201521
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  • 10
    Digitale Medien
    Digitale Medien
    Spiral CT for the detection of hepatocellular carcinomas:relative value of arterial- and late-phase scanning (1996)
    Springer
    Abdominal imaging 21 (1996), S. 440-444 
    Details
    ISSN: 1432-0509
    Schlagwort(e): Key words: Computed tomography (CT), technology—Liver, CT—Hepatocellular carcinoma, CT.
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract. Background: Spiral computed tomography (CT) can image the liver during arterial and late phases of contrast and optimize the evaluation of hypervascular tumor. The objective of this study was to evaluate the relative value of arterial- and late-phase spiral CT in the detection of hepatocellular carcinomas. Methods: Fifty-eight patients with hepatocellular carcinomas underwent two-phase spiral CT examination with 10-mm collimation at 10 mm/s table speed (Siemens Somatom Plus S), and 120 mL of contrast material (36 g iodine) was injected at the rate of 3 mL/s. CT images of hepatic arterial and late phases were obtained with a 35-s and 180-s delay, respectively. Results: In 58 patients, 111 hepatocellular carcinoma lesions were seen. The arterial phase detected 93 (84%) and the late phase 75 (68%) lesions (p 〈 0.01). The arterial phase detected more lesions in 11 patients, and the late phase dected more in two patients and an equal number in 45 patients. If lesions larger than 2 cm are excluded, the arterial phase detected 40 (74%) and the late phase 21 (39%) of 54 lesions (p 〈 0.001). Conclusion: The arterial phase of spiral CT greatly improves the detection of hepatocellular carcinoma when compared with the late phase.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002619900099
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