[The use of contrast medium in computerized tomography of the skull].
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Biomedical subjects
Publications and source records attributed to D Benvenuti.
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A rare instance of pituitary invasive adenoma in a child has been reported; the unusual age of the patient and then the rarity of the orbit invasion has been emphasized. It has been further pointed out the histologically benign nature of the neoplasm, which on contrast behaves like a malignant adenoma, according to its rapid and serious anatomo-clinical evolution.
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The Authors report 70 cases of medium and large size acoustic neuromas, operated on using the suboccipital approach, the only one which allows their total extirpation. Total extirpation was performed in 77% of the patients. The Authors analyze the clinical picture, the neuroradiological diagnostic procedures and the surgical techniques used in the treatment of these lesions.
In this study an interesting and not frequent case of non-traumatic chronic subdural haematoma after spinal anaesthesia is reported. After a careful review of the cases described in the literature, the Authors discussed the physiopathological mechanisms, emphasizing how the break of the bridge veins or of the subarachnoid granulations, the cerebral atrophy and the dehydration are factors which facilitate the appearance of this neurological complication. They suggest that a suitable post-operative rehydration is an important prevention factor.
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Polyarteritis nodosa (PN) is frequently cause of both central and peripheral neurological disorders. However, involvement of the central nervous system is rare at the beginning of the disease. In this paper we report a case of a 38-year-old woman hospitalized in our Neurosurgical Service because of left hemiparesis in presence of cutaneous arteritis (PN). At computed tomography (CT) an intracerebral hemorrhage was found. No radiographic evidences of vasculitis of the visible arterial branches, at angiography, were seen. Cerebral arteritis should be suspected as a cause for intracranial hemorrhage in patients without hypertension or other risk factors.