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  • 1
    ISSN: 1432-2161
    Keywords: Key words Osteosarcoma ; Multicentric ; Metastatic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Objective. There is a current debate whether multicentric osteosarcoma represents synchronous multiple primary osteosarcomas or metastatic disease. The purpose of this report is to evaluate the etiology, presentation, and classification of this entity. Design and patients. Six patients ranging in age from 7 to 29 years were studied. The clinical, radiographic, and pathologic findings are reported. In addition, a review of the literature was undertaken. Results. The clinical courses of our six patients as well as a review of the literature suggest that multicentric osteosarcoma represent one extreme of a continuous scale of metastatic osteosarcoma rather than multiple synchronous primary tumors. The presentation is unusual and the clinical behavior distinctive, but the mechanism of spread remains the same: blood-borne and lymphatic-borne. Conclusions. Our experience with these six patients supports the concept in the recent literature that synchronous osteosarcoma is one extreme of the spectrum of metastatic osteosarcoma. Its unique features are: (1) multiple radiodense lesions that present simultaneously with or without pulmonary metastases; (2) a single ”dominant” lesion with multiple smaller lesions; and (3) a uniformly rapid, fatal prognosis. Osteosarcoma should be regarded as a metastatic disease, even when only a single primary lesion is found at the initial presentation.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Skeletal radiology 27 (1998), S. 108-111 
    ISSN: 1432-2161
    Keywords: Key words Bone tumor ; Skull ; Meningioma ; extraneuraxial ; Intraosseous ; Proptosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  A 71-year-old woman with a long history of slowly progressive proptosis was found to have an intraosseous meningioma of the right sphenoid bone. Radiologically, the lesion resembled fibrous dysplasia. The key to the diagnosis is irregularity of the inner table of the skull. The histologic appearance is characteristic. Intraosseous meningioma is one part of the spectrum of diseases known as primary extraneuraxial meningioma. In this paper we discuss the theories of cellular origin as well as the radiologic differential diagnosis.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Skeletal radiology 29 (2000), S. 125-132 
    ISSN: 1432-2161
    Keywords: Key words Spine, injury, classification ; CT imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Objective. Computed tomography (CT) has been demonstrated to be superior to radiography in identifying cervical vertebral injuries. However, many of these injuries may not be clinically significant, and require only minimal symptomatic and supportive treatment. It is therefore imperative that radiologists and spine surgeons have criteria for distinguishing between those injuries requiring surgical stabilization and those that do not. The authors propose a new classification of cervical vertebral injuries into two categories: major and minor. Design and patients.  A data base, acquired on 1052 separate cervical injuries in 879 patients seen between 1983 and 1998, was reviewed. Four categories of injury based on mechanism [hyperflexion (four variants), hyperextension (two variants), rotary (two variants), and axial compression (five variants)] were identified. ”Major” injuries are defined as having either radiographic or CT evidence of instability with or without associated localized or central neurologic findings, or have the potential to produce the latter. ”Minor” injuries have no radiographic and/or CT evidence of instability, are not associated with neurologic findings, and have no potential to cause the latter. Results and conclusions.  Cervical injury should be classified as ”major” if the following radiographic and/or CT criteria are present: displacement of more than 2 mm in any plane, wide vertebral body in any plane, wide interspinous/interlaminar space, wide facet joints, disrupted posterior vertebral body line, wide disc space, vertebral burst, locked or perched facets (unilateral or bilateral), ”hanged man” fracture of C2, dens fracture, and type III occipital condyle fracture. All other types of fractures may be considered ”minor”.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Skeletal radiology 7 (1982), S. 251-254 
    ISSN: 1432-2161
    Keywords: Knee arthrography ; Plica ; Plica syndrome ; Suprapatellar plica ; Synovial plicae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This report describes the anatomy, pathophysiology, clinical, and radiographic findings, and treatment of the synovial plicae of the knee joint. The suprapatellar plica is a synovial fold present in the suprapatellar pouch of the knee joint in approximately 20% of the population. This fold may become symptomatic after injury and cause symptoms similar to other common internal derangements of the knee. Double contrast arthrography of the knee can be used to identify the presence of plicae. Although arthrography can identify the presence of a plica, its clinical significance requires close correlation with symptoms and an accurate clinical examination.
    Type of Medium: Electronic Resource
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