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  • 1
    Electronic Resource
    Electronic Resource
    Gas bubbles within acute intracranial epidural haematomas (1990)
    Springer
    Acta neurochirurgica 102 (1990), S. 22-24 
    Details
    ISSN: 0942-0940
    Keywords: Head injury ; intracranial epidural haematoma ; computed tomography of the skull ; pneumocephalus ; gas bubbles
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In order to assess the actual incidence of gas bubbles trapped within acute intracranial epidural haematomas, as revealed by computed tomography (CT) of the skull, a series of 204 patients with surgically verified epidural haematomas was retrospectively reviewed. Gas bubbles were observed on CT scan in 22.5% of the cases, with the incidence rising to 37% when CT scanners of the last generation were employed. The available data failed to demonstrate the actual source of intracranial gas. No correlation was found between the presence of gas bubbles and outcome. No patient in the whole series showed any sign of intracranial infection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01402181
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Blake's pouch cyst: an entity within the Dandy-Walker continuum (2000)
    Springer
    Neuroradiology 42 (2000), S. 290-295 
    Details
    ISSN: 1432-1920
    Keywords: Key words Blake's pouch cyst ; Dandy-Walker complex ; Dandy-Walker malformation ; Posterior fossa malformation ; MRI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Abnormal cerebrospinal fluid (CSF) collections within the posterior fossa are defined by the Dandy-Walker complex (DWC) and by arachnoid cysts (AC). The DWC includes the Dandy-Walker malformation (DWM), the Dandy-Walker variant (DWV) and the mega-cisterna magna (MCM). In addition, Tortori-Donati et al. added persistent Blake's pouch cyst (BPC) as an independent entity within the DWC. BPC represents a posterior ballooning of the superior medullary velum into the cisterna magna. All of these malformations are overlapping developmental anomalies characterized by varying degrees of malformation of the medullary vela, the cerebellar vermis and hemispheres, the fourth ventricle choroid plexus, the posterior fossa subarachnoid cisterns and the enveloping meningeal structures. We present two cases of persistent BPC detected in two adult women without history of gestational or subsequent growth problems. They underwent neuroradiological investigation because of headache and because of recurrent episodes of loss of consciousness, respectively. The MRI findings included tetraventricular hydrocephalus, wide communication of the fourth ventricle and the cystic posterior fossa (i. e. BPC), inferior posterior fossa mass effect with or without hypoplasia of both the cerebellar vermis and the medial aspects of the cerebellar hemispheres, and absence of communication between fourth ventricle and the basal subarachnoid space in the midline posteriorly. Persistent BPC is defined by a failure of embryonic assimilation of the area membranacea anterior within the tela choroidea associated with imperforation of the foramen of Magendie. Typically this condition becomes symptomatic early in life. In the current cases the normal function of the laterally positioned foramina of Luschka probably helped to maintain some CSF flow between intraventricular and subarachnoid spaces, with the establishment of a precarious equilibrium characterized by a compensatory enlargement of the cerebral ventricular system (i. e. hydrocephalus).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050888
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Degenerative changes in hypophyseal adenomas: CT features (1983)
    Springer
    Neurological sciences 4 (1983), S. 285-289 
    Details
    ISSN: 1590-3478
    Keywords: Adenomas ; degenerative changes ; CT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario Gli eventi degenerativi nell'ambito degli adenomi ipofisari sono di frequente riscontro dal punto di vista isto-patologico (7, 15), ma ciononostante non sono stati sufficientemente valutati sul piano tomodensitometrico, anche in rapporto alle difficoltà tecniche incontrate fino ad oggi nello studio della regione sellare. Pertanto abbiamo ritenuto opportuno prendere in considerazione tali aspetti, data l'importanza che il tipo e la frequenza di queste alterazioni possono assumere sul piano diagnostico e su quello del trattamento.
    Notes: Abstract 16 patients with hypophyseal adenoma undergoing degenerative changes, namely necrotic-cystic changes, bleeding and calcification, were subjected to CT and the resulting density values studied. The cases were verified at operation and at histological examination. Evaluation of these features, despite the limitations of the method, proved to be very useful in differential diagnosis and in the planning of treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02043480
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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