Publications by authors named "Eugenio Pozzati"

The association of cavernous malformations and developmental venous anomalies (DVA) is well known, but the presence of arterial fistulous connection with the main venous collector has been reported in the literature only once. We report the unusual case of a hemorrhagic cavernous angioma associated with DVA characterized by a fine arterial supply to the main venous collector. During surgery, after the excision of the cavernous angioma, few small arterial feeders were found entering the main channel of the venous developmental anomaly.

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Herein we describe the case of a young patient who presented with a recent history of epilepsy due to multiple brain lesions; he did not complain about any cardiopulmonary impairments. The patient died as a consequence of hemorrhagic progression of brain metastatic disease. Regardless of a thorough investigation, the heart tumor remained occult.

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Background: Treatment options for glioblastoma (GBM) at recurrence have limited efficacy. Re-surgery has been used for confirmation of recurrent disease and to provide relief of symptoms but the real impact on survival is unknown.

Patients And Methods: A retrospective analysis was performed for GBM patients followed between 01/2005 and 06/2010 at our Institution.

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The optimal end point for phase II studies for recurrent glioblastoma (GBM) is unclear and a matter of debate. Moreover, data about post-progression survival (PPS) after the first disease progression in GBM patients treated according to EORTC 26981/22981/NCIC CE.3 trial are limited.

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Unfortunately, the affiliation of the author name, Antonella Bacci, was incorrectly listed as Antonella Bacci(1) instead of Antonella Bacci(3), and the affiliations were incorrectly listed as (1) Department of Neurosurgery, IRCCS Neurological Research Hospital; Bologna, Italy - (2) Section of Pathology "M. Malpighi", Bellaria Hospital, Azienda USL of Bologna, Bologna, Italy instead of (1) Department of Neurosurgery, (3) Department of Neuroradiology, IRCCS Neurological Research Hospital; Bologna, Italy. (2) Section of Pathology "M.

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A case of dumbbell nasal and intracerebral olfactory neuroblastoma (ONB) related to possible seeding through an "olfactory ventricle" in the olfactory bulb and nerve is reported. This anatomic variant was recognized at operation for the first time: it consists of a hollow cavity within the olfactory bulb and nerve which may be connected to the subventricular zone of the frontal horn of the lateral ventricle. Better scrutiny of this structure is necessary in view of its possible interference with the course and diffusion of ONBs.

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Background And Importance: Arachnoid cysts within the fourth ventricle have rarely been reported in the literature. Different procedures have been performed to restore a normal cerebrospinal fluid dynamic or pressure, including shunting and partial or complete excision of the cyst by open microsurgery. Cerebrospinal fluid shunts give only partial improvement of symptoms and are prone to malfunctions.

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Objective: To present our experience of symptomatic cerebral cavernous malformations (CCMs) in pregnancy and to review the literature on the topic.

Methods: We retrospectively collected a case series of symptomatic CCMs during pregnancy or the puerperium. A literature search was performed to identify all similar reports.

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Objective: The relationship between hippocampal histopathological abnormalities, epileptogenesis and neurogenesis remains rather unclear.

Methods: Tissue samples including the subgranular zone of dentate gyrus (DG) were freshly collected for tissue culture for neurospheres generation in 16 patients who underwent surgery for drug-resistant temporal lobe epilepsy. Remaining tissues were histologically examined to assess the presence of mesial temporal sclerosis (MTS) and focal cortical dysplasia.

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The number of implanted vagal nerve stimulators is growing and the need for removal or revision of the devices will become even more frequent. A significant concern about Vagus Nerve Stimulation (VNS) therapy is the presence of the spiral stimulating electrodes, wrapped around the nerve, once treatment is considered ineffective or is no longer desired. Our purpose is to demonstrate the feasibility of complete removal and replacement of the vagal nerve stimulator electrodes using microsurgical technique even after a long period, without damaging the nerve.

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We describe a 17-year-old boy with a left extraventricular temporo-mesial neurocytoma associated with cortical dysplasia causing focal pharmacoresistant temporal lobe epilepsy. He presented with a long history of medically refractory, temporal complex partial seizures. MRI showed a left temporo-mesial lesion suspect to be a low-grade tumor.

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Recent clinical and experimental evidence has challenged the traditional concept of the venous system as a "passive" element in the genesis and evolution of intracranial vascular malformations. The authors review the clinical and experimental evidence linking the venous system and its anomalies to the genesis of various intracranial vascular malformations, including dural arteriovenous fistulas, cavernous malformations, parenchymal arteriovenous malformations, and capillary telangiectasia. They also describe the potential significance of different associations of these vascular anomalies.

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Objective: The main clinico-diagnostic features, risk factors and associated diseases of cavernous malformations (CMs), also called cavernous angiomas or cavernomas, of the central nervous system (CNS) in children are described, and the most relevant differences compared to the affected adult population are pointed out, focusing on the management of pediatric patients harboring cranial and spinal CMs.

Materials: This was a retrospective study of a series of 42 children symptomatic for CMs of the cranial and spinal compartments (35 supratentorial brain lesions, 5 infratentorial and 2 in the spinal region) operated on between 1975 and 2005, with a clinical follow-up ranging from 12 to 192 months. The results were compared with those found in the most recent literature dealing with pediatric CMs of the CNS.

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The median overall survival and, more importantly, the 2-year survival rate of patients with newly diagnosed glioblastoma are increased by the administration of combined temozolomide and radiotherapy, which has recently become the new standard of treatment in patients with a histological confirmation of diagnosis. Moreover, the assessment of O(6)-methylguanine-DNA methyltransferase gene promoter methylation has clarified the impact of this approach, and improved upon the interpretation of doubtful cases after concurrent radiotherapy/temozolomide treatment. Therefore, future strategies in the treatment of glioblastoma patients will include stratification for MGMT methylation status, and various approaches based on epigenetic features are currently under investigation.

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Object: The four types of cerebrovascular malformations may sometimes be combined and more often occur in pairs; triads are exceptional. The authors present six patients with the clinicoradiographic profile of mixed vascular malformations of the brainstem, including cavernous malformation (CM), capillary telangiectasia, and developmental venous anomaly (DVA).

Methods: Five patients (one of whom was a child) suffered from hemorrhage, suggesting that this complex association has a high bleeding potential.

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Background: Lymphangioleiomyomatosis is a progressive interstitial lung disease that affects young women. It has been suggested that estrogens play a role in its evolution, and progesterone therapy is often provided in these cases.

Case Description: We present a case of a postmenopausal woman with LAM treated with progesterone; subsequently, rapid growth of multiple intracranial meningiomas was observed.

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Objective: Spinal extramedullary hematomas stemming from cavernous angiomas in the epidural compartment are rare. It is more common for spinal epidural cavernous angiomas to present with slow and progressive myelopathy or radiculopathy. They seldom present with clinical evidence of acute spinal cord or nerve root compression.

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The risk of hemorrhage in cavernous malformations (CMs) depends on lesion, host, and environmental factors. Anticoagulation therapy is a well-known risk factor for intracerebral bleeding, but the occurrence of hemorrhages in patients with CMs has not been reported. Low molecular weight heparin therapy is generally considered to be safe, although significant hemorrhagic complications have recently been reported.

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Objective: We report 81 patients with a traumatic intracerebellar hemorrhagic contusion or hematoma managed between 1996 and 1998 at 13 Italian neurosurgical centers.

Methods: Each center provided data about patients' clinicoradiological findings, management, and outcomes, which were retrospectively reviewed.

Results: A poor result occurred in 36 patients (44.

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