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 ebook represents a distillation of the adventure won in analysis of intracranial tumors with computed X-ray tomography on the college Hos pitals of Berlin, Mainz, and Miinchen. To what goal? typical radiological ideas comparable to pneumoencephalography with lumbar puncture and cerebral arteriography with puncture of the typical carotid artery are invasive proce dures which entail a specific amount of possibility in addition to pain for the sufferer. in addition, diagnoses made with those systems depend totally on oblique indicators of an intracranial space-occupying lesion - akin to displacement of the air-filled ventricles or of standard cerebral vessels. just a couple of varieties of tumor are verified at once with those ideas. against this, computed tomography demonstrates the pathology at once in just about all situations, and this with at the least probability and ache. additionally, general intracranial buildings are tested, in order that the tumor's impression on its atmosphere should be evaluated. at the present time, nearly a decade after HOUNSFIELD'S progressive invention, diagno sis of mind tumors with no computed tomography is nearly unthinkable, if no longer actually irresponsible.
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Intracerebral hematomas in the resorption phase may appear as zones of low density during the process of resorption and may therefore present a CT picture similar to that found in astrocytoma (Figs. 434). Perifocal edema in the white matter does not favor the diagnosis of astrocytoma. One sometimes finds metastases that do not take up contrast medium and therefore appear as circumscribed low density zones, which may be misinterpreted Computed Tomography in Brain Tumors as astrocytoma if clinical data do not suggest a diagnosis of metastatic tumor.
This differs considerably from CT studies of other low-grade (fibrillary and protoplasmatic) astrocytomas 30 Computed Tomography in Brain Tumors Fig. 11. Gemistocytic astrocytoma in the left frontal lobe with marginal cysts and perifocal edema in a 34-year-old male. 2% of all intracranial tumors in our series. It may occur at any age but is most commonly found between the ages of 35 and 45 years with a slight preponderance of males. Prognosis is that of a grade III tumor. Typical Locations The tumors are most commonly found in the frontal, frontoparietal, temporal, and temporoparietal regions.
Mixed glioma in the right precentral region with extension to the corpus callosum in a 23-year-old male with an organic brain syndrome and seizures. CT shows a large cystic tumor with marginal contrast enhancement as in glioblastoma. Histological examination resulted in the diagnosis of anaplastic oligoastrocytoma.