Publications by authors named "Alessandro Dı Rienzo"

Background:  Malignant ischemic stroke (MIS) is defined by progressive cerebral edema leading to increased intracranial pressure (ICP), compression of neural structures, and, eventually, death. Decompressive craniectomy (DC) has been advocated as a lifesaving procedure in the management of patients with MIS. This study aims to identify pre- and postoperative predictive variables of neurologic outcomes in patients undergoing DC for MIS.

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Background: Brain metastases (BMs) represent the most frequent brain tumors in adults. The identification of key prognostic factors is essential for choosing the therapeutic strategy tailored to each patient. Epilepsy can precede several months of other clinical presentations of BMs.

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  • * Researchers analyzed 32 patients who received this method, emphasizing one-sided access for decompression, while keeping the opposite side intact to maintain spinal stability.
  • * Results showed successful decompression in all patients, with significant improvements in neurological function and no immediate complications related to spine instability, highlighting the effectiveness of this tailored technique.
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  • Decompressive craniectomy (DC) shows potential benefits for survival in traumatic brain injury (TBI) patients with high intracranial pressure, but it also carries a significant risk of poor post-surgical outcomes.
  • A study of 75 TBI patients who underwent DC from 2015 to 2019 identified preoperative factors like the Glasgow Coma Scale (GCS), neutrophil-to-lymphocyte ratio (NLR), and timing of cranioplasty that can influence long-term outcomes.
  • Findings revealed that a GCS score greater than 8 correlated with better outcomes at 6 months, while higher NLR values and longer intervals to cranioplasty were linked to poorer outcomes at both 6
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Background: The coexistence of hyper-inflow aneurysms and cerebellopontine angle cistern (CPAc) arterial venous malformations (AVMs) have been rarely reported and most commonly associated with high risk of bleeding.

Case Descriptions: We present two cases of CPAc AVMs admitted for acute subarachnoid hemorrhage from rupture of a parent right pontine artery aneurysm. Admission history, neurology at presentation, pre/post-operative imaging, approach selection, and results are thoroughly reviewed and presented.

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Background: Bone flap resorption is a known complication of postdecompressive autologous cranioplasty. Although several potential etiopathogenetic factors have been investigated, their role is still under discussion. To further complicate things, resorption is not an all-or-nothing event, patients frequently presenting with different degrees of flap remodeling.

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Background: Ventriculoperitoneal (VP) shunt exposure is rare. Small series reporting on managing this complication mainly focus on the pediatric population, where wound breaks over cerebrospinal fluid (CSF) chambers are observed most frequently. However, case series on adult patients are missing.

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Introduction: The use of hydroxyapatite cranioplasties has grown progressively over the past few decades. The peculiar biological properties of this material make it particularly suitable for patients with decompressive craniectomy where bone reintegration is a primary objective. However, hydroxyapatite infection rates are similar to those of other reconstructive materials.

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Article Synopsis
  • This study analyzed the impact of various preoperative factors on the overall survival of 81 patients who underwent surgery for spinal metastases between 2015 and 2021.
  • Key predictive factors identified included the histology of the primary tumor, Tomita and Tokuhashi revised scores, preoperative Karnofsky Performance Status Score (KPS), and the use of adjuvant therapy after surgery.
  • The findings indicated that these factors significantly influenced patient survival, with the median survival time post-surgery being 13 months.
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Background: Holospinal epidural abscesses (HEAs) are rare with potentially devastating consequences. Urgent bony decompression and abscess evacuation with long-term antibiotic therapy are typically the treatment of choice.

Methods: We reviewed cases of holospinal HEAs operated on between 2009 and 2018.

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Background: Ventriculoperitoneal (VP) shunting is widely accepted as the gold-standard treatment for idiopathic normal pressure hydrocephalus (iNPH). However, a restricted group of patients experience only minimal or no improvement after the operation. In such cases, the question whether the diagnosis was incorrect or the shunt is malfunctioning remains unanswered.

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  • - Dura mater repair is a critical step in neurosurgery, and improper reconstruction can lead to serious complications, making the search for effective dural substitutes essential.
  • - Previous studies introduced a laser-based technique to bond porcine dura mater using Indocyanine Green-loaded patches made from chitosan, known for its durability and compatibility with physiological conditions.
  • - In ex vivo experiments, it was found that using a specific laser setting (3W, pulsed mode) effectively welded the patches to the dura mater, achieving strong bonding while limiting thermal damage, and encouraging further testing in living models.
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  • The study focuses on the SmartXide CO laser system in neurosurgery, highlighting its recent technological improvements that make laser surgery easier and more reliable.
  • Ten brain and spinal tumor cases were treated using the CO laser alongside traditional surgical tools, demonstrating effective tumor removal while preserving surrounding neurovascular structures.
  • The results suggest the SmartXide CO laser system is a safe and cost-effective option for neurosurgical procedures, offering simultaneous cutting, ablating, and coagulating capabilities with minimal thermal damage.
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  • Spinal schwannomas are non-cancerous tumors that grow slowly, and doctors usually remove them using a procedure called laminectomy, which gives them a good view of the area.
  • * Recently, a newer method called hemilaminectomy has become popular because it leads to quicker recovery times and less pain after surgery.
  • * A study of 40 patients showed that hemilaminectomy had faster surgery times, less time in bed, shorter hospital stays, and less pain compared to traditional laminectomy.
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The optimal management of cranioplasty infections remains a matter of debate. Most authors have suggested that the infected bone/implant removal is mandatory, combined with prolonged antibiotic therapy before reconstruction. However, failures can occur, even with 12-18-month intervals between the surgeries.

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Ventricular walls penetration frequently occurs in periventricular gliomas surgery. Even when aimed at maximal tumor resection, it can lead to several complications, including CSF leak, delayed wound healing and, potentially, distant tumor dissemination, with a negative impact on overall survival. Several authors have claimed damaged ventricular walls always need repair, especially when the additional use of intrathecal chemotherapy is scheduled.

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The sinking flap syndrome (SFS) is one of the complications of decompressive craniectomy (DC). Although frequently presenting with aspecific symptoms, that may be underestimated, it can lead to severe and progressive neurological deterioration and, if left untreated, even to death. We report our experience in a consecutive series of 43 patients diagnosed with SFS and propose a classification based on the possible etiopathogenetic mechanisms.

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Cast intraventricular hemorrhage (IVH) is associated to high morbidity/mortality rates. External ventricular drainage (EVD), the most common treatment adopted in these patients, may be unsuccessful due to short-term drain obstruction and requires weeks for cerebrospinal fluid (CSF) clearing, increasing the risks of ventriculits. Administration of intraventricular fibrinolytic agents and endoscopic evacuation have been proposed as alternative treatments, but with equally poor results.

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Background: Radical resections of ethmoidal tumors with intracranial extension present highly complex surgical and reconstructive problems. The purpose of report is to describe the authors' use of adipofascial radial forearm free flaps following unsuccessful anterior cranial fossa oncological surgery.

Methods: Adipofascial radial forearm free flaps were used to treat 3 similar cases of cutaneous fistula following bone resorption with communication to anterior cranial fossa and nasal cavity.

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Coil migration and extrusion outside the cranial compartment after embolization of cerebral aneurysms represents a very rare complication of the endovascular procedures and few cases are reported in the literature. Instability of the vascular malformation wall and the resolution of the intramural hematoma, especially in pseudoaneurysm, might generate extravascular migration of the coils in the first months after embolization. However, to the best of our knowledge, an extrusion of coil 10 years after embolization has never been reported.

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Objective: Surgical treatment of ventrally located intradural cysts is difficult and controversial. Laminectomy with division of the denticulate ligaments and gentle cord mobilization remains the standard approach but risks further neurologic deterioration secondary to cord manipulation. Our purpose is to evaluate the safety and effectiveness of a midline cord-splitting approach as an alternative for treating ventral thoracic intradural cysts.

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