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  • Cerebellar neuroblastoma  (2)
  • Granule cell  (2)
  • 1α-hydroxyvitamin D3  (1)
  • Atrial fibrillation  (1)
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Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Morphological investigations on cerebellar “neuroblastoma” group (1982)
    Springer
    Acta neuropathologica 56 (1982), S. 22-28 
    Details
    ISSN: 1432-0533
    Keywords: Cerebellar neuroblastoma ; Desmoplastic medulloblastoma ; Synaptic device ; Granule cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Classic medulloblastoma is a relatively common and distinct clinicopathologic entity consisting of primitive multipotential cells with differentiating capacity to neuroblastic and/or glial cell lines. Desmoplastic medulloblastoma has some features in common with cerebellar neuroblastoma, in which ultrastructural evidence of significant neuroblastic differentiation is extremely rare. We studied three cerebellar tumors with evidence of neuronal differentiation as compared to four classical desmoplastic medulloblastomas. Two of three tumors contained the regions of different degrees resembling desmoplastic medulloblastoma and one consisted of neuroblastic cells exclusively. This spectrum of differentiation suggests a relationship between cerebellar neuroblastoma and medulloblastoma, especially of the desmoplastic type. The nature of cerebellar neuroblastoma and its nosology are briefly discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00691178
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Cerebellar neuroblastoma (1980)
    Springer
    Acta neuropathologica 50 (1980), S. 139-142 
    Details
    ISSN: 1432-0533
    Keywords: Cerebellar neuroblastoma ; Medulloblastoma ; Synaptic vesicle ; Synapse ; Granule cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A cerebellar tumor of a 4-month-old girl was examined by light and electron microscopy. The presence of numerous synaptic vesicles in many cell processes and the occasional synaptic devices warranted the diagnosis of neuroblastoma of the cerebellum. The nature of the tumor is discussed briefly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692864
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Vitamin D dependent rickets: Decreased sensitivity to 1,25-dihydroxyvitamin D (1981)
    Springer
    European journal of pediatrics 137 (1981), S. 307-311 
    Details
    ISSN: 1432-1076
    Keywords: Vitamin D dependent rickets ; 1α-hydroxyvitamin D3 ; Hypocalcemia ; Osteomalacia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A patient with vitamin D dependent rickets with decreased sensitivity to 1,25-Dihydroxyvitamin D was observed. She suffered from bone pain of two years duration beginning at 12 years of age and was found to be suffering from hypocalcemia, secondary hyperparathyroidism and osteomalacia. Laboratory findings revealed normal serum 25-hydroxyvitamin D (27 ng/ml) and markedly elevated serum 1,25-dihydroxyvitamin D (131.9 pg/ml). The hypocalcemia was refractory in spite of administration of 25,000 units of vitamin D2, but therapy with high doses of oral 1α-hydroxyvitamin D3 resulted in significant elevation of the serum calcium level. The clinical findings and course of the patient's disease were quite different from those of other patients with vitamin D dependent rickets reported by other authors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00443263
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Detection of atrial-flutter and atrial-fibrillation waveforms by fetal magnetocardiogram (1992)
    Springer
    Medical & biological engineering & computing 40 (1992), S. 213-217 
    Details
    ISSN: 1741-0444
    Keywords: Fetal magnetocardiogram ; Atrial flutter ; Atrial fibrillation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Two cases of fetal tachycardia are reported: atrial flutter and fibrillation. The waveforms from each case were detected by fetal magnetocardiograms (FMCGs) using a 64-channel superconducting quantum interference device (SQUID) system. Because the magnitude of supraventricular arrhythmia signals is very weak, two subtraction methods were used to detect the fetal MCG waveforms: subtraction of the maternal MCG signal, and subtraction of the fetal QRS complex signal. It was found that atrial-flutter waveforms showed a cyclic pattern and that atrial-fibrillation waveforms showed f-waves with a random atrial rhythm. Fast Fourier transform analysis determined the main frequency of the atrial flutter to be about 7 Hz, and the frequency distribution of atrial fibrillation consisted of small, broad peaks. To visualise the current pattern, current-arrow maps, which simplify the observation of pseudo-current patterns in fetal hearts, of the averaged atrial flutter and fibrillation waveforms were produced. The map of the atrial flutter had a circular pattern, indicating a re-entry circuit, and the map of the atrial fibrillation indicated one wavelet, which was produced by a micro-re-entry circuit. It is thus concluded that an FMCG can detect supraventricular arrhythmia, which can be characterised by re-entry circuits, in fetuses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02348127
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    Paper (German National Licenses)
    Fulltext
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