RESUMO
Meningiomas of the lateral ventricles of the brain are rare tumours, accounting for approximately 0.5-5% of all intracranial meningiomas. Their natural history and symptomatology and the possibilities of early diagnosis are presented. The intraventricular location of the slow-growing benign mass provides a compensatory mechanism in the form of reserve space, which contributes to the delay in clinical demonstration of symptoms and signs. This makes the choice of diagnostic procedure an essential problem. CT and MRI are useful in detecting these masses, and magnetic resonance angiography (MRA) has also proved to be of great value in demonstrating the vascular supply of the tumour. This paper deals with two cases. In case 1 CT, MRI and MRA and in case 2 CT examination proved to be very useful. The tumours were removed by a transcortical approach in the posterior area.
Assuntos
Neoplasias do Ventrículo Cerebral/diagnóstico , Meningioma/diagnóstico , Adolescente , Neoplasias do Ventrículo Cerebral/patologia , Neoplasias do Ventrículo Cerebral/cirurgia , Ventrículos Cerebrais/patologia , Criança , Feminino , Humanos , Angiografia por Ressonância Magnética , Imageamento por Ressonância Magnética , Masculino , Meningioma/patologia , Meningioma/cirurgia , Tomografia Computadorizada por Raios XRESUMO
Results of surgical treatment of 35 giant aneurysms. Over the last 4 years (1988-1991) 35 large aneurysms were operated on in the Department of Neurosurgery Medical Academy in Gdansk. This material is divided in two groups: to group I belong these aneurysms of diameter 2 to 2.5 cm and to group II those above the diameter of 2.5 cm. Surgery in group I was always performed by means of direct attack, while in group II sometimes STA-MTA by-pass, combined with carotid ligation was applied. The by-pass procedure is particularly advocated in the aneurysms of the infraclinoid portion of ICA and those originating from the junction of the ophthalmic and ICA (carotid-ophthalmic). With the progress of operative technique and routine application of temporary clipping of the vessels adjacent to and supplying the aneurysm, the number of by-pass operations has been limited to those of the infraclinoid portion of ICA only. Only in 1 case the result was unfavourable, in 2 cases it was fair and in 2 other cases it was excellent.
