[Demonstration of rapidly growing brain tumors by C.A.T. (author's transl)].
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Aged↗
Biomedical subjects
H Marcu
Publications and source records attributed to H Marcu.
Subdural hematoma associated with dural metastatic tumor.
Two cases of subdural hematoma associated with dural metastasis are reported. The computed tomographic and angiographic features are presented. The possible pathogenetic mechanism is discussed. Our cases support the idea of obstruction of dural capillaries by neoplastic cells and subsequent subdural bleeding.
Carotid Arteries↗
[Delayed traumatic intracerebral hemorrhage. Report of 5 cases].
Five cases of traumatic delayed intracerebral hemorrhage are reported. At the admission two patients showed only contusional injury and three had acute intracranial hematomas, one with an extradural infratentorial and two with supratentorial hematomas, which were immediately removed. Repeated CT-scans revealed the delayed intracerebral hemorrhage. Three patients developed an intracerebral hemorrhage within the first 24 hours after admission. The possible mechanisms producing these lesions are discussed. The high mortality of these patients (four in our series) is associated with severe brain damage after the traumatism.
Adult↗
Bilateral reversible thalamic lesions on computed tomography.
Bilateral approximately symmetrical hypodense areas located in the thalamus were encountered in two patients who recovered clinically. Regression of the lesions could be observed on CT. The clinical symptoms corresponded to the thalamic location. Since these two patients recovered, no autopsy material is available to prove the nature of the causative lesion, although the etiology is most probably inflammatory.
Adolescent↗
Oligodendrogliomas: CT patterns with emphasis on features indicating malignancy.
Computed tomography (CT) of 22 patients with histologically verified oligodendroglioma showed calcifications in 20 cases and contrast enhancement in 14. All of the enhancing cases proved to have malignant histological features. In 2 of the 14 malignant tumors, definite CT evidence (fluid-fluid level) of a cystic component was present.
Adolescent↗
Computed-tomography of bilateral isodense chronic subdural hematomas.
While unilateral chronic isodense subdural hematomas as a result of indirect signs of a space-occupying lesion are easily recognizable on computed tomography (CT) and clearly diagnosed on the angiogram, bilateral chronic isodense subdural hematomas may cause considerable difficulty. In two cases with CT false negative findings we observed, retrospectively, significant small cellae mediae and also the main part of the anterior horns sharply pointed and approaching one another. Three further cases showed the same ventricular configuration, which we called "hare's ears sign". This sign together with clinical data is always suspicious of chronic bilateral isodense subdural hematomas and carotid angiography is indicated. Other possible signs are: subtle midline shift if the size of the hematoma varies, changed formation of density of brain tissue, non-appearance of cerebral sulci especially in elderly patients, and eventually the visualization of a membrane after intrevenous injection of contrast material.
Adult↗
CT diagnosis of basilar artery occlusion.
Basilar artery occlusion was diagnosed by high-resolution computed tomography (CT) in 11 cases. The normal basilar artery imaged on plain CT scans has an attenuation value not higher than that of whole blood. If the CT attenuation value of the vessel is higher than that of blood, basilar artery occlusion is probably present. The tentative diagnosis can be confirmed by comparison of the attenuation values on the pre- and postcontrast scans, preferably using multiple slices obtained by multiplane dynamic CT.
Adult↗