Bilateral Tapia's syndrome secondary to cervical spine injury: a case report and literature review.

A 24-year-old man presented with bilateral Tapia's syndrome (TS) after a traumatic cervical spine injury, manifested by apraxia of the hypoglossal and recurrent laryngeal nerves. The initial presentation was a profound inability to maintain upper respiratory airway patency due to bilateral vocal cord paralysis, accompanied by impairment of swallowing and loss of speech. The diagnosis was based on clinical grounds and verified by endoscopic laryngoscopy. A C7 corpectomy was performed for stabilizing the cervical spine, while conservative treatment with steroids was reserved for the TS. Over the following six months, there was complete resolution of the symptoms.

Methodological assessment of guidelines for the diagnosis and management of cerebral vasospasm using the AGREE-II tool.

OBJECTIVE: Rupture of an intracranial aneurysm is the most common cause of spontaneous subarachnoid hemorrhage. Despite the recent advances in its early detection, diagnosis, and proper treatment, the outcome of patients experiencing aneurysmal subarachnoid hemorrhage (aSAH) remains poor. It is well known that cerebral vasospasm is the most troublesome complication of aSAH, while delayed cerebral ischemia related to cerebral vasospasm constitutes the major cause of unfavorable outcomes in patients with aSAH. The need for evidence-based guidelines is of great importance for the prevention, early detection, and efficient management of aSAH-induced vasospasm. Moreover, guidelines provide young physicians with a valuable tool for practicing defensible medicine. However, the methodology, clinical applicability, reporting clarity, and biases of guidelines must be periodically assessed. In this study, the authors sought to assess the reporting clarity and methodological quality of published guidelines and recommendations. METHODS: A search was performed in the PubMed, Scopus, and Web of Science databases. The search terms used were "clinical practice guidelines," "recommendations," "stroke," "subarachnoid hemorrhage," and "vasospasm" in all possible combinations. The search period extended from 1964 to September 2021 and was limited to literature published in the English language. All published guidelines and recommendations reporting on the diagnosis and management of vasospasm were included. Studies other than those reporting guidelines and recommendations were excluded. The eligible studies were evaluated by three blinded raters, employing the Appraisal of Guidelines for Research & Evaluation II (AGREE-II) analysis tool. RESULTS: A total of 10 sets of guidelines were evaluated in this study. The American Heart Association/American Stroke Association issued guidelines found to have the highest methodological quality and reporting clarity, followed by the European Stroke Organization guidelines and the English edition of the Japanese guidelines issued by the Japanese Society on Surgery for Cerebral Stroke. The interrater agreement was moderate in the current analysis. CONCLUSIONS: These findings support the idea that improvement of currently existing guidelines is feasible in the following domains: the rigor of guidelines and recommendations development, clinical applicability, editorial independence, and stakeholder involvement. Furthermore, periodic updating of published guidelines requires improvement in the future.

Intermediate surgical outcome in patients suffering poor-grade aneurysmal subarachnoid hemorrhage. A single center experience.

BACKGROUND: It is known that patients suffering poor-grade aneurysmal subarachnoid hemorrhage (aSAH) have a dismal prognosis. The importance of early intervention is well established in the pertinent literature. Our aim was to assess the functional outcome and overall survival of these patients undergoing surgical clipping. MATERIAL AND METHODS: In the current retrospective study we included all consecutive poor-grade patients after spontaneous SAH who presented at our institution over an eight-year period. All participants suffering SAH underwent brain CT angiography (CTA) to identify the source of hemorrhage. We assessed the severity of hemorrhage according to the Fisher grade classification scale. All patients were surgically treated. The functional outcome was evaluated six months after the onset with the Glasgow Outcome Scale. Finally, we performed logistic and Cox regression analyses to identify potential prognostic risk factors. RESULTS: Our study included twenty-three patients with a mean age of 53 years. Five (22%) patients presented with Hunt and Hess grade IV, and eighteen (78%) with grade V. The mean follow-up was 15.8 months, while the overall mortality rate was 48%. The six-month functional outcome was favorable in 6 (26%) patients. The vast majority of our patients died between the 15th and the 60th post-ictal days. We did not identify any statistically significant prognostic factors related to the patient's outcome and/or survival. CONCLUSIONS: Poor-grade aSAH patients may have a favorable outcome with proper surgical management. Large-scale studies are necessary for accurately outlining the prognosis of this entity, and identifying parameters that could be predictive of outcome.

Complications after Anterior Temporal Lobectomy for Medically Intractable Epilepsy: A Systematic Review and Meta-Analysis.

BACKGROUND: The efficacy of surgery in the management of patients with longstanding temporal lobe epilepsy has been established. Anterior temporal lobectomy (ATL) is the most frequently implemented procedure. However, there is an obvious need to assess its perioperative safety. OBJECTIVE: We conducted a meta-analysis to estimate the postoperative mortality (Q1) and morbidity (Q2) associated with ATL for medically intractable epilepsy. In addition, we tried to identify the most frequent complications after ATL and assess their relative frequency (Q3) in children and adults. METHODS: Fixed- and random-effects model meta-analysis was conducted to assess the proportion estimate for each outcome individually. RESULTS: The postoperative mortality and cumulative morbidity were estimated to be as high as 0.01 (95% CI: 0.01, 0.02) and 0.17 (95% CI: 0.12, 0.24), respectively. Psychiatric disorders were the most common postoperative complications after ATL, with an estimated frequency as high as 0.07 (95% CI: 0.04, 0.10), followed by visual field defects (0.06; 0.03, 0.11), and cognitive disorders (0.05; 0.02, 0.10). Less frequent complications included hemiparesis and language disorders (0.03; 0.01, 0.06), infections (0.03; 0.02, 0.04), hemorrhage (0.02; 0.01, 0.05), cranial nerve deficits (0.03; 0.02, 0.05), extra-axial fluid collections (0.02; 0.01, 0.03), and medical complications (0.02; 0.01, 0.03). CONCLUSIONS: Even though the mortality after ATL is minimal, the overall morbidity cannot be ignored. Psychiatric disturbances, visual field defects, and cognitive disorders are the most common postoperative complications, and should be considered during the preoperative planning and consultation.

Consensus statement from the International Consensus Meeting on the Role of Decompressive Craniectomy in the Management of Traumatic Brain Injury : Consensus statement.

BACKGROUND: Two randomised trials assessing the effectiveness of decompressive craniectomy (DC) following traumatic brain injury (TBI) were published in recent years: DECRA in 2011 and RESCUEicp in 2016. As the results have generated debate amongst clinicians and researchers working in the field of TBI worldwide, it was felt necessary to provide general guidance on the use of DC following TBI and identify areas of ongoing uncertainty via a consensus-based approach. METHODS: The International Consensus Meeting on the Role of Decompressive Craniectomy in the Management of Traumatic Brain Injury took place in Cambridge, UK, on the 28th and 29th September 2017. The meeting was jointly organised by the World Federation of Neurosurgical Societies (WFNS), AO/Global Neuro and the NIHR Global Health Research Group on Neurotrauma. Discussions and voting were organised around six pre-specified themes: (1) primary DC for mass lesions, (2) secondary DC for intracranial hypertension, (3) peri-operative care, (4) surgical technique, (5) cranial reconstruction and (6) DC in low- and middle-income countries. RESULTS: The invited participants discussed existing published evidence and proposed consensus statements. Statements required an agreement threshold of more than 70% by blinded voting for approval. CONCLUSIONS: In this manuscript, we present the final consensus-based recommendations. We have also identified areas of uncertainty, where further research is required, including the role of primary DC, the role of hinge craniotomy and the optimal timing and material for skull reconstruction.

Collagen type-I A2 gene polymorphisms and susceptibility to intracranial aneurysms: a meta-analysis of genetic association studies.

BACKGROUND: The development, evolution and rupture of intracranial aneurysms are in part related to genetic factors. The role of collagen type-I a2 genetic polymorphisms has not been clarified yet. MATERIAL AND METHODS: A meta-analysis was realized by means of a genotype model-fitting process (allele contrast, recessive, dominant, additive and co-dominant), and a model-free approach using the generalized odds ratio. The latter was assessed in association to the degree of dominance (h-index). RESULTS: No statistically significant association was documented between EX28 G>C collagen type-I a2 variant and intracranial aneurysms (generalized odds ratio = 1.23, 95% confidence interval = 0.57, 2.63). Significant associations between INT46 T>G collagen type I a2 variant and intracranial aneurysms were documented in three models, the dominant [0.52 (0.38, 069)], the co-dominant [0.50 (0.32, 0.78)] and the allele contrast models [0.63 (0.49, 0.82)]. The generalized odds ratio was estimated to be as high as 1.94 (1.23, 3.06). The degree of dominance (h-index = -1.54) indicated that the TG genotype was characterized by lower risk of developing intracranial aneurysms compared to the TT genotype. CONCLUSIONS: The available literature data demonstrated that there is no association of collagen type-(2a) and intracranial aneurysms, through EX28 G>C (rs42524) polymorphism according to the model-fitting process and the model-free approach. Regarding the INT46 T>G (rs2621215) polymorphisms, the latter models indicated that there could be a protective effect of the G-allele against the development of intracranial aneurysms. However, the majority of studies are from East Asia, therefore the results are applicable primarily to that patient population.

The role of diffusion tensor imaging and fractional anisotropy in the evaluation of patients with idiopathic normal pressure hydrocephalus: a literature review.

OBJECTIVE Diffusion tensor imaging (DTI) for the assessment of fractional anisotropy (FA) and involving measurements of mean diffusivity (MD) and apparent diffusion coefficient (ADC) represents a novel, MRI-based, noninvasive technique that may delineate microstructural changes in cerebral white matter (WM). For example, DTI may be used for the diagnosis and differentiation of idiopathic normal pressure hydrocephalus (iNPH) from other neurodegenerative diseases with similar imaging findings and clinical symptoms and signs. The goal of the current study was to identify and analyze recently published series on the use of DTI as a diagnostic tool. Moreover, the authors also explored the utility of DTI in identifying patients with iNPH who could be managed by surgical intervention. METHODS The authors performed a literature search of the PubMed database by using any possible combinations of the following terms: "Alzheimer's disease," "brain," "cerebrospinal fluid," "CSF," "diffusion tensor imaging," "DTI," "hydrocephalus," "idiopathic," "magnetic resonance imaging," "normal pressure," "Parkinson's disease," and "shunting." Moreover, all reference lists from the retrieved articles were reviewed to identify any additional pertinent articles. RESULTS The literature search retrieved 19 studies in which DTI was used for the identification and differentiation of iNPH from other neurodegenerative diseases. The DTI protocols involved different approaches, such as region of interest (ROI) methods, tract-based spatial statistics, voxel-based analysis, and delta-ADC analysis. The most studied anatomical regions were the periventricular WM areas, such as the internal capsule (IC), the corticospinal tract (CST), and the corpus callosum (CC). Patients with iNPH had significantly higher MD in the periventricular WM areas of the CST and the CC than had healthy controls. In addition, FA and ADCs were significantly higher in the CST of iNPH patients than in any other patients with other neurodegenerative diseases. Gait abnormalities of iNPH patients were statistically significantly and negatively correlated with FA in the CST and the minor forceps. Fractional anisotropy had a sensitivity of 94% and a specificity of 80% for diagnosing iNPH. Furthermore, FA and MD values in the CST, the IC, the anterior thalamic region, the fornix, and the hippocampus regions could help differentiate iNPH from Alzheimer or Parkinson disease. Interestingly, CSF drainage or ventriculoperitoneal shunting significantly modified FA and ADCs in iNPH patients whose condition clinically responded to these maneuvers. CONCLUSIONS Measurements of FA and MD significantly contribute to the detection of axonal loss and gliosis in the periventricular WM areas in patients with iNPH. Diffusion tensor imaging may also represent a valuable noninvasive method for differentiating iNPH from other neurodegenerative diseases. Moreover, DTI can detect dynamic changes in the WM tracts after lumbar drainage or shunting procedures and could help identify iNPH patients who may benefit from surgical intervention.

An evidence-based approach towards the cranio-cervical junction injury classifications.

PURPOSE: The cranio-cervical junction (CCJ) is an anatomically, functionally and biomechanically complex region. It is commonly involved in trauma of varying severity that can be managed with a multitude of treatment options and carry diverse prognosis. Our objective is to evaluate the quality of currently used CCJ injury classifications in an evidence-based approach. METHODS: We performed two consecutive literature reviews. In the first, we tried to find which classifications are currently used in CCJ injuries. In the second, we scrutinized the gathered classifications in terms of validity, reliability, severity grading, treatment guidance and prognosis assessment. RESULTS: Twenty classifications are currently used to describe the CCJ injuries and 72 individual injury patterns have been recognized. Almost a third of them can grade severity, guide treatment and assess prognosis. Only two classifications have been tested for validity and reliability. CONCLUSIONS: CCJ injuries are poorly described by the current classifications according to evidence-based criteria. There is an obvious need for a simple and reliable classification tool to guide patient management in the evidence-based medicine era.

Bundle of measures for external cerebral ventricular drainage-associated ventriculitis.

OBJECTIVE: To assess the prevalence and outcome of external cerebral ventricular drainage-associated ventriculitis in neurocritical patients before and after the implementation of a bundle of external cerebral ventricular drainage-associated ventriculitis control measures. DESIGN: Clinical prospective case series. SETTING: University Hospital of Larissa, Greece. PATIENTS: Consecutive patients were recruited from the ICU of the hospital. Patient inclusion criteria included presence of external ventricular drainage and ICU stay more than 48 hours. INTERVENTION: The bundle of external cerebral ventricular drainage-associated ventriculitis control measures included 1) reeducation of ICU personnel on issues of infection control related to external cerebral ventricular drainage, 2) meticulous intraventricular catheter handling, 3) cerebrospinal fluid sampling only when clinically necessary, and 4) routine replacement of the drainage catheter on the seventh drainage day if the catheter was still necessary. The bundle was applied after an initial period (preintervention) where standard policy for external cerebral ventricular drainage-associated ventriculitis was established. MEASUREMENTS: External cerebral ventricular drainage-associated ventriculitis prevalence, external cerebral ventricular drainage-associated ventriculitis events per 1,000 drainage days (drain-associated infection rate), length of ICU stay, Glasgow Outcome Scale at 6 months, and risk factors for external cerebral ventricular drainage-associated ventriculitis. MAIN RESULTS: Eighty-two patients entered the study in the preintervention period and 57 patients during the intervention period. During the preintervention and intervention period, external cerebral ventricular drainage-associated ventriculitis prevalence was 28% and 10.5% (p = 0.02) and drain-associated infection rate was 18 and 7.1, respectively (p = 0.0001); mean (95% CI) length of ICU stay in patients who presented external cerebral ventricular drainage-associated ventriculitis was 44.4 days (36.4-52.4 d), whereas mean (95% CI) length of ICU stay in patients who did not was 20 days (16.9-23.2 d) (p < 0.001). Furthermore, the length of ICU stay was associated with length of drainage (p = 0.0001). Therefore, the presence of external cerebral ventricular drainage-associated ventriculitis and the length of drainage were the only variables associated with a prolonged ICU stay. Unfavorable outcome in Glasgow Outcome Scale at 6 months was not associated with the presence of external cerebral ventricular drainage-associated ventriculitis (p = 0.5). No significant differences were found when Glasgow Outcome Scale was analyzed according to the two study periods. CONCLUSIONS: The implementation of a bundle of measures for external cerebral ventricular drainage-associated ventriculitis control was associated with significantly decreased postintervention prevalence of the infection.

Clinical applications of intracranial pressure monitoring in traumatic brain injury : report of the Milan consensus conference.

BACKGROUND: Intracranial pressure (ICP) monitoring has been for decades a cornerstone of traumatic brain injury (TBI) management. Nevertheless, in recent years, its usefulness has been questioned in several reports. A group of neurosurgeons and neurointensivists met to openly discuss, and provide consensus on, practical applications of ICP in severe adult TBI. METHODS: A consensus conference was held in Milan on October 5, 2013, putting together neurosurgeons and intensivists with recognized expertise in treatment of TBI. Four topics have been selected and addressed in pro-con presentations: 1) ICP indications in diffuse brain injury, 2) cerebral contusions, 3) secondary decompressive craniectomy (DC), and 4) after evacuation of intracranial traumatic hematomas. The participants were asked to elaborate on the existing published evidence (without a systematic review) and their personal clinical experience. Based on the presentations and discussions of the conference, some drafts were circulated among the attendants. After remarks and further contributions were collected, a final document was approved by the participants. The group made the following recommendations: 1) in comatose TBI patients, in case of normal computed tomography (CT) scan, there is no indication for ICP monitoring; 2) ICP monitoring is indicated in comatose TBI patients with cerebral contusions in whom the interruption of sedation to check neurological status is dangerous and when the clinical examination is not completely reliable. The probe should be positioned on the side of the larger contusion; 3) ICP monitoring is generally recommended following a secondary DC in order to assess the effectiveness of DC in terms of ICP control and guide further therapy; 4) ICP monitoring after evacuation of an acute supratentorial intracranial hematoma should be considered for salvageable patients at increased risk of intracranial hypertension with particular perioperative features.

The Outcome after Surgical Management of Ruptured Versus Unruptured Anterior Circulation Aneurysms.

OBJECTIVES: The present article aimed to review the safety and the clinical and radiological outcomes of clipped ruptured and unruptured anterior circulation aneurysms. MATERIALS AND METHODS: The study investigated the relative articles involving the outcome after surgical management of ruptures versus unruptured anterior circulation aneurysms through electronic databases from January 1980 to January 2023. The primary outcomes were mortality and modified Rankin scale (mRS) >3. RESULTS: Information on mRS >3 was found in six articles totalizing 2096 patients, of whom 130 subjects had ruptured and unruptured aneurysms. Data about mortality was provided by eight studies totalizing 2454 participants, of whom 140 subjects had ruptured and unruptured aneurysms. CONCLUSIONS: The current meta-analysis indicates that surgical clipping is a safe procedure for both ruptured and unruptured aneurysms of anterior circulation.

The role of lobectomy in glioblastoma management: A systematic review and meta-analysis.

Introduction: Lobectomy has recently been employed in the management of glioblastoma (GB). Compared to subtotal, gross total and supramarginal resection, lobectomy provides maximum cytoreduction and improves overall survival (OS). Research question: The primary aim of this study is to compare lobectomy to other techniques for managing GB in terms of OS and progression-free survival (PFS). This study evaluated the association of the available surgical techniques for GB management with the reported relevant seizure outcome, operation time, length of stay, complication incidence, and Karnofsky performance status. Materials and methods: A PRISMA-compliant systematic review and meta-analysis was performed. We searched PubMed, Scopus, and Web of Science from January 2013 until April 2023. Random-effects models were employed. The Newcastle-Ottawa scale (NOS) and the GRADE approach were used for estimating risk of bias and quality of evidence. Results: We included six studies. Lobectomy demonstrated a mean OS of 25 months, compared to 13.72 months for gross total resection (GTR), and a PFS of 16.13 months, compared to 8.77 months for GTR. Comparing lobectomy to GTR, no statistically significant differences were observed regarding seizure management, length of stay, operation time, complications, and KPS due to limited amount of data. Discussion and conclusion: Our analysis demonstrated that lobectomy compared to GTR has a tremendous impact on the OS and the PFS, which seems to be improved almost by a year. Lobectomy, while demanding from a technical standpoint, constitutes a safe surgical procedure but further studies should assess its exact role in the management of GB patients.

Determination of a 'point of no return' in refractory chronic subdural hematomas: A case report and review of the literature.

Recurrence following the surgical evacuation of a chronic subdural hematoma (CSDH) occurs in up to 33% of cases. Several clinical and radiologic factors have been identified that are associated with the recurrence of hematoma. However, the optimal treatment for recurrent CSDH has not yet been determined. The present study, based on a case report, reviews the predictors and treatment options for refractory CSDHs. An 85-year-old male patient presented with a symptomatic bilateral CSDH. The hematoma was initially removed through a burr hole and closed drainage system, resulting in clinical improvement and in the radiographic resolution of the hematoma. At the first recurrence, steroids were administered and the hematoma was re-evacuated. After 1 month, the patient returned comatose due to a massive right subdural hematoma and was treated with an ipsilateral craniotomy and a membranectomy. After 2 days, the patient succumbed due to massive intraparenchymal bleeding. The treatment of refractory CSDHs is challenging. The failure of brain re-expansion and senile atrophy appear to be the key predictors of recurrence. Patients who are at high-risk need to be identified promptly and treated with a multidisciplinary approach that considers adjuvant medications, middle meningeal artery embolization and repeat hematoma evacuation, probably with a membranectomy and an endoscope.

Association between polymorphisms of DNA repair genes and intracranial aneurysms: A systematic review and meta­analysis.

Intracranial aneurysms (IAs) are present in ~2% of the general population, and genetic factors cannot be excluded for the risk of their development. The gene factors that result in the changes in the vascular extracellular matrix (ECM) may also be a key reason for IAs being hereditary. The VCAN gene [also known as chondroitin sulfate proteoglycan 2 (CSPG2)] plays various roles in maintaining ECM functions. The present systematic review and meta-analysis aimed to investigate all eligible articles involving IAs on the association with germ line SNPs of DNA repair genes (up to January, 2024). The total number of patients was 2,308 [987 cases (poor outcomes) and 1,321 controls (good outcomes)]. The results revealed that rs2287926 G/G genotype and G allele and rs251124 T/T genotype and minor allele T increased the risk of developing IAs. However, further studies are required to examine these gene polymorphisms as screening markers for IAs.

Localization of Vestibular Cortex Using Electrical Cortical Stimulation: A Systematic Literature Review.

The vestibular system plays a fundamental role in body orientation, posture control, and spatial and body motion perception, as well as in gaze and eye movements. We aimed to review the current knowledge regarding the location of the cortical and subcortical areas, implicated in the processing of vestibular stimuli. The search was performed in PubMed and Scopus. We focused on studies reporting on vestibular manifestations after electrical cortical stimulation. A total of 16 studies were finally included. Two main types of vestibular responses were elicited, including vertigo and perception of body movement. The latter could be either rotatory or translational. Electrical stimulation of the temporal structures elicited mainly vertigo, while stimulation of the parietal lobe was associated with perceptions of body movement. Stimulation of the occipital lobe produced vertigo with visual manifestations. There was evidence that the vestibular responses became more robust with increasing current intensity. Low-frequency stimulation proved to be more effective than high-frequency in eliciting vestibular responses. Numerous non-vestibular responses were recorded after stimulation of the vestibular cortex, including somatosensory, viscero-sensory, and emotional manifestations. Newer imaging modalities such as functional MRI (fMRI), Positron Emission Tomography (PET), SPECT, and near infra-red spectroscopy (NIRS) can provide useful information regarding localization of the vestibular cortex.

Surgical outcomes of patients with unruptured anterior vs. inferior circulation aneurysms: A meta­analysis.

The treatment option for unruptured intracranial aneurysms (UIAs) depends on their natural history-related risk of rupture vs. the risk of surgical management. The present meta-analysis sought to assess the association between the surgical outcomes of anterior and posterior circulation UIAs. The present study investigated the comparative articles involving the surgical treatment of anterior vs. posterior circulation UIAs through electronic databases, including the Cochrane Library, PubMed (1980 to March, 2023), Medline (1980 to March, 2023) and EMBASE (1980 to March, 2023). Quoting all exclusion and inclusion criteria, nine articles finally remained for statistical analysis. The entire number of patients included in these nine articles was 3,253 (2,662 in the anterior and 591 in the posterior circulation UIAs group). The present meta-analysis proposes that the surgical treatment of anterior circulation UIAs is associated with better outcomes compared with the surgical management of posterior circulation UIAs.

Management of intracranial cavernous malformations using conservative vs. surgical and/or radiosurgical treatment: A systematic review and meta­analysis.

Intracranial cavernous malformations (CMs) are vascular lesions with a high bleeding rate. At present, the debate regarding their treatment is still ongoing. The present systematic review and meta-analysis aimed to evaluate the safety of surgery or radiosurgery (SRS) for the management of CMs and to determine their potential outcomes compared with conservative treatment. The present systematic review and meta-analysis investigated the relative articles involving the management of intracranial CMs, namely their natural history (conservative treatment) vs. surgical/SRS treatment through electronic databases until June, 2023. The collected variables included the first author's name, the study period covered, the year of publication, the total number of patients examined and their age, and the number of males. In total, six articles met the eligibility criteria. The total number of patients was 399 (157 in the surgery/SRS group and 242 in the conservative treatment group). The results revealed that surgical or SRS management is a safe procedure for CMs compared with conservative treatment. Notably, the use of hemosiderin in the pre-MRI, the free of seizures parameter and the neurological deficit parameters were associated with improved outcomes in the surgical or SRS group of patients.

Role of decompressive craniectomy in the management of acute ischemic stroke (Review).

The application of decompressive craniectomy (DC) is thoroughly documented in the management of brain edema, particularly following traumatic brain injury. However, an increasing amount of concern is developing among the universal medical community as regards the application of DC in the treatment of other causes of brain edema, such as subarachnoid hemorrhage, cerebral hemorrhage, sinus thrombosis and encephalitis. Managing stroke continues to remain challenging, and demands the aggressive and intensive consulting of a number of medical specialties. Middle cerebral artery (MCA) infarcts, which consist of 1-10% of all supratentorial infarcts, are often associated with mass effects, and high mortality and morbidity rates. Over the past three decades, a number of neurosurgical medical centers have reported their experience with the application of DC in the treatment of malignant MCA infarction with varying results. In addition, over the past decade, major efforts have been dedicated to multicenter randomized clinical trials. The present study reviews the pertinent literature to outline the use of DC in the management of malignant MCA infarction. The PubMed database was systematically searched for the following terms: 'Malignant cerebral infarction', 'surgery for stroke', 'DC for cerebral infarction', and all their combinations. Case reports were excluded from the review. The articles were categorized into a number of groups; the majority of these were human clinical studies, with a few animal experimental clinical studies. The surgical technique involved was DC, or hemicraniectomy. Other aspects that were included in the selection of articles were methodological characteristics and the number of patients. The multicenter randomized trials were promising. The mortality rate has unanimously decreased. As for the functional outcome, different scales were employed; the Glasgow Outcome Scale Extended was not sufficient; the Modified Rankin Scale and Bathel index, as well as other scales, were applied. Other aspects considered were demographics, statistics and the very interesting radiological ones. There is no doubt that DC decreases mortality rates, as shown in all clinical trials. Functional outcome appears to be the goal standard in modern-era neurosurgery, and quality of life should be further discussed among the medical community and with patient consent.

Bone graft absorption complication following cranioplasty: A retrospective institutional study.

The aim of the present retrospective study was to confer the factors that are related to bone graft absorption and affect the outcomes of patients following cranioplasty (CPL). The present retrospective study includes cases of patients that underwent CPL between February, 2013 and December, 2022. All participants had a follow-up period of 1 to 10 years from the day of discharge from the hospital. In total, 116 (62.3%) of the 186 patients that underwent decompressive craniectomy (DC) were enrolled in the present study for CPL. A total of 109 (93.9%) patients were included in group A, and 7 (6.0%) patients were included in group B. On the whole, the results of the present study suggest that a CPL after 2.5-7.7 months of DC increases the possibility of bone absorption.

Comparison of surgical outcomes between primary and secondary brain abscess.

Brain abscess (BA) constitutes 1-8% of intra-cerebral tumors, and thus the present study aimed to compare the surgical outcomes of patients with primary and secondary BA. The present retrospective study examined 32 of cases BA who underwent surgery in a local institution between February, 2013 and December, 2023. All patients received intravenous antibiotic therapy according to the antibiogram for antimicrobial susceptibility. In total, 32 patients were separated into two groups as follows: Group A (16 patients, 50%) with primary abscess and group B (16 patients, 50%) with secondary abscess. Of the 32 patients included in the study, 23 (71.8%) were males, and the median age was 55.3 years. On the whole, the present study demonstrates that a multidisciplinary approach involving a combination of often multiple surgical procedures and prolonged antibiotic medication may improve the functional outcome if the underlying pathology allows for a functional outcome.