By Prof. Dr. med. Gianni B. Bradač, Prof. Dr. med. Udalrich Büll, Prof. Dr. med. Rudolf Fahlbusch, Prof. Dr. med. Thomas Grumme, Prof. Dr. med. Ekkehard Kazner, Dr. med. Konrad Kretzschmar, Priv. Doz. Dr. med. Wolfgang Lanksch, Dr. med. Wolfang Meese, Priv.
The present publication represents a distillation of the event received in analysis of intracranial tumors with computed X-ray tomography on the college Hos pitals of Berlin, Mainz, and Miinchen. To what objective? average radiological suggestions equivalent to pneumoencephalography with lumbar puncture and cerebral arteriography with puncture of the typical carotid artery are invasive proce dures which entail a certain quantity of hazard in addition to pain for the sufferer. additionally, diagnoses made with those systems count totally on oblique indicators of an intracranial space-occupying lesion - comparable to displacement of the air-filled ventricles or of standard cerebral vessels. just a couple of sorts of tumor are confirmed at once with those options. by contrast, computed tomography demonstrates the pathology without delay in just about all situations, and this with at least hazard and pain. furthermore, common intracranial constructions are confirmed, in order that the tumor's influence on its atmosphere should be evaluated. this present day, virtually a decade after HOUNSFIELD'S progressive invention, diagno sis of mind tumors with out computed tomography is sort of unthinkable, if no longer in truth irresponsible.
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Additional info for Computed Tomography in Intracranial Tumors: Differential Diagnosis and Clinical Aspects
Astrocytoma in the left frontal lobe of a 33-year-old patient with seizures. No contrast uptake in the hypodense portions of the tumor. Histological examination revealed areas of anaplasia, therefore classification of the tumor as anaplastic astrocytoma Fig. 14. Large anaplastic astro- cytoma in the right precentral region with extension into the right lateral ventricle in a 40-year-old patient with a history of seizures for several years and progredient left hemiparesis. Sharply delineated, primarily hypodense tumor with indistinct areas of contrast uptake indicating anaplasia Autochthonous Brain Tumors - Anaplastic Astrocytomas Fig.
Intracranial findings include very extensive garland-like calcification, usually in the temporo-parieto-occipital region. Diagnostic problems may arise when the facial hemangioma is absent and intracranial calcification is limited (Fig. F59). 7. Tuberculoma. Circumscribed solitary calcification may be found in tuberculoma. These lesions are currently quite rare in Central Europe, but frequent in Central and South America. 8. Cysticercosis. One most often finds multiple circular calcifications, and this facilitates diagnosis.
20; see Table 1). 1 x·ray atlenuatlon In tumor tissue hypodense contrast medium uptake In tumor hssue poSitive lsodense hyperdense penlocal edemo mlxoo Fig. 12. 5% of the anaplastic astrocytomas in our collective. Tumor and accompanying edema often cause pronounced displacement of midline structures. 1%). The tumor itself usually appears as a distinct isodense structure within the hypodense zone of edema (Fig. 24). In some cases the actual neoplasm may be hypodense, and as a result it is not possible to differentiate between tumor and edema in the precontrast study.
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