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  • Liver, focal nodular hypersplasia  (1)
  • Sleep  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Early-stage focal nodular hyperplasia: US/CT/MR features correlated with histology (1994)
    Springer
    European radiology 4 (1994), S. 65-70 
    Details
    ISSN: 1432-1084
    Keywords: Liver, neoplasms ; Liver, diseases ; Liver, focal nodular hypersplasia ; Magnetic resonance imaging ; Magnetic resonance imaging ; Magnetic resonance (MR), tissue characterization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Two cases of local nodular hyperplasia (FNH), in which ultrasound (US), computed tomography (CT), and magnetic resonance imaging (MR) studies detected an atypical hemorrhagic pattern associated with an intrahepatic arterio venous malformation (AVM) around the growths, are presented. In both cases, histology demonstrated a very early regenerative stage — without central scar or fibrosis — and necrotichemorrhagic areas within the lesions. In these cases, the analysis of radiological findings, surgical specimens and histology seemed to confirm the pathogenetic hypothesis suggested by Wanless [1]: in normal liver parenchyma, a “blood steal” phenomenon due to congenital or acquired intrahepatic AVM — arterio portal or porto systemic shunt — could cause ischemic damaged, appering as a hemorrhagic necrotic area, the extent of which depends on the degree of residual portal supply (maintained in Case 1, and markedly reduced in Case 2 due to arterio portal shunting). The subsequent phase of repair could activate the regenerative-hyperplastic process, evolving into final fibrosis, which represents the “mature” pattern of FHN.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00177391
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    SPECT and epilepsy with continuous spike waves during slow-wave sleep (1995)
    Springer
    Child's nervous system 11 (1995), S. 154-160 
    Details
    ISSN: 1433-0350
    Keywords: SPECT ; Epilepsy ; Sleep ; Cerebral blood flow
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Ten cases of epilepsy with continuous spike waves in slow-wave sleep (CSWS) were evaluated using single photon emission computed tomography (SPECT); in eight patients the EEG paroxysmal abnormalities showed a predominant localization. SPECT carried out using99mTc-HMPAO allows study of cerebral blood flow (CBF); the examination was performed during phases of drowsiness and the results compared to the EEG data. In four cases SPECT revealed areas of low CBF in sites corresponding to those of the prevalent EEG discharges; in two cases the areas of hypoperfusion did not correspond to those indicated by the EEG; lastly, in four cases SPECT results were negative. The areas of hypoperfusion were predominantly located in the frontal, temporal, and parietal regions. Furthermore, the percentage of positive SPECT results was significantly higher (five cases out of six) in the group in which the CSWS phase was prolonged for at least 1 year, compared to the group in which this phase lasted less than 1 year. Thus, in this type of epilepsy, SPECT reveals focal cortical areas of decreased CBF which correlated generally to the predominant sites of EEG abnormalities. A longer duration of the CSWS phase seems to be associated with a more significant cortical disorder, documented by the presence of areas of hypoperfusion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00570256
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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