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  • 1
    Electronic Resource
    Electronic Resource
    Myxoma of the humerus: an exceptional site of origin (2000)
    Springer
    Skeletal radiology 29 (2000), S. 57-60 
    Details
    ISSN: 1432-2161
    Keywords: Key words Myxoma ; Humerus ; Pathological fracture ; Radiographs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Myxoma of bone, outside of the jaws, is exceptional. We present such a tumor in the humerus and discuss the criteria for the diagnosis of myxoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560050011
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Unsuspected metastases presenting as solitary soft tissue lesions: a fourteen-year review (2000)
    Springer
    Skeletal radiology 29 (2000), S. 270-274 
    Details
    ISSN: 1432-2161
    Keywords: Key words Soft tissue neoplasm ; Metastasis ; MRI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Objective. To describe a series of patients with no known primary malignancy who presented with a solitary unsuspected soft tissue metastasis masquerading as a soft tissue sarcoma, and secondarily to describe the imaging appearance of these lesions. Design. Records of two academic hospitals with active orthopedic oncology services were reviewed for patients meeting the above criteria. Clinical charts were examined, and the imaging appearance of the soft tissue lesions retrospectively reviewed. Patients. Of 1421 patients examined for soft tissue lesions, 11 were found who met the above criteria. Results. Of the 11 patients whose initial presentation was a solitary soft tissue metastasis, eight were found to have a primary lung cancer, two were diagnosed with adenocarcinoma of unknown primary, and adenocarcinoma of the colon was discovered in the remaining patient. Conclusions. The clinical presentation of a solitary soft tissue metastasis without a known primary malignancy is a rare occurrence, with an incidence of approximately 0.8%. Lung cancer is the primary neoplasm in a high percentage of these cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560050606
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Modelling the biological aspects of local endemism in South African Fynbos (1995)
    Springer
    Plant systematics and evolution 195 (1995), S. 137-147 
    Details
    ISSN: 1615-6110
    Keywords: Fynbos ; endemism ; dispersal ; growth form ; regeneration ; logistic regression analysis ; model ; Flora of the Cape
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The biological attributes, dispersal mode, growth form, and regeneration strategy were determined for the endemic and non-endemic flora of the southern Langeberg, Cape Province, South Africa.—Logistic regression analysis was used to assess the simultaneous effects and interactions between these biological attributes on the occurrence of endemism. The model allowed numerical estimation of the probability that a species with a given set of attributes would be endemic.—This approach extends a contingency table analysis of the data, which merely indicated the association between individual biological traits and endemism. Furthermore, the logistic model allows scope for the analysis of the influence of biological traits in determining endemism in other floras, and also tentative prediction of the probability of endemism in species with combinations of biological traits not yet observed in the flora of the southern Langeberg.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00989290
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Vegetation-environment relationships on a species-rich coastal mountain range in the fynbos biome (South Africa) (1996)
    Springer
    Plant ecology 123 (1996), S. 165-182 
    Details
    ISSN: 1573-5052
    Keywords: Classification ; Fynbos ; Gradient analysis ; Vegetation-environment relationships
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The species-rich fynbos of the southern Langeberg Mountains, South Africa was studied along three transects (a) to evaluate the compatibility of a floristic classification of the southern Langeberg vegetation with a fynbos biome-wide structural classification of mountain vegetation, (b) to describe the environmental gradients to which the vegetation responds and (c) to investigate the relationship between the vegetation and the abiotic environmental variables which determine the pattern of distribution of the fynbos communities on the southern Langeberg. Principal Components Analysis (PCA) was used to determine correlations between environmental variables independent of vegetation data. Similarities between the 46 communities (determined by floristics) from the three transects were determined using cluster analysis and grouped into 14 higher-level units. Detrended Correspondence Analysis (DCA) was then used for indirect gradient analysis after which Canonical Correspondence Analysis (CCA) was used in a direct gradient analysis of the vegetation with the environmental variables. Compatibility between the floristic and structural classification of the vegetation was analysed. The PCA principal gradient was defined as one from sites with high rock cover, shallow soils and north aspects to those with low rock cover, deeper soils and south aspects. The second gradient is most strongly positively correlated with percentage organic carbon and most strongly negatively correlated with soil clay content. In contrast to the PCA, the DCA showed that the principal gradient is a precipitation gradient, with the response of the vegetation dominated by the change from wet to dry conditions and from low to high winter incoming radiation. The CCA showed that the variation in the mountain habitats to which the vegetation responds can be predicted from a combination of a few environmental variables. The principal gradient was one of change from high to low mean annual precipitation with an opposite change in winter incoming radiation. The second gradient was described by percentage surface rock cover and soil clay content. A simple model using the environmental factors selected in the CCA was proposed for predicting the distribution of floristically determined community groups in the fynbos vegetation of the Langeberg and the southern Cape coastal mountains in general.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00118269
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    Paper (German National Licenses)
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