Multiple surgical resections for progressive IDH wildtype glioblastoma-is it beneficial?

PURPOSE: The role of repeat resection for recurrent glioblastoma (rGB) remains equivocal. This study aims to assess the overall survival and complications rates of single or repeat resection for rGB. METHODS: A single-centre retrospective review of all patients with IDH-wildtype glioblastoma managed surgically, between January 2014 and January 2022, was carried out. Patient survival and factors influencing prognosis were analysed, using Kaplan-Meier and Cox regression methods. RESULTS: Four hundred thirty-two patients were included, of whom 329 underwent single resection, 83 had two resections and 20 patients underwent three resections. Median OS (mOS) in the cohort who underwent a single operation was 13.7 months (95% CI: 12.7-14.7 months). The mOS was observed to be extended in patients who underwent second or third-time resection, at 22.9 months and 44.7 months respectively (p < 0.001). On second operation achieving > 95% resection or residual tumour volume of < 2.25 cc was significantly associated with prolonged survival. There was no significant difference in overall complication rates between primary versus second (p = 0.973) or third-time resections (p = 0.312). The use of diffusion tensor imaging (DTI) guided resection was associated with reduced post-operative neurological deficit (RR 0.37, p = 0.002), as was use of intraoperative ultrasound (iUSS) (RR 0.45, p = 0.04). CONCLUSIONS: This study demonstrates potential prolongation of survival for rGB patients undergoing repeat resection, without significant increase in complication rates with repeat resections. Achieving a more complete repeat resection improved survival. Moreover, the use of intraoperative imaging adjuncts can maximise tumour resection, whilst minimising the risk of neurological deficit.

Fostering interdisciplinary working within global surgery at an undergraduate level: A hackathon based approach.

Objective: To investigate the effectiveness of a virtual hackathon in fostering interdisciplinary working amongst undergraduate students in global surgery. Methodology: In this study, we developed a 3 day event consisting of guest lectures, a documentary screening and a hackathon supported by academics and experts in the field, to provide students with the opportunity to learn more about and work in interdisciplinary teams within global surgery. Students had the option to attend just the lectures or both the lectures and hackathon. Quantitative and qualitative results were collected through a pre and post session survey. Results: A total of 21 responses were received for the hackathon and 26 responses for the general event (response rate for event = 26 %, response rate for hackathon = 24.7 %). There was a significant improvement in understanding of interdisciplinary working in global surgery between the pre and post-session survey, with an increase in median from 3 (IQR = 2-3.5, n = 21) to 4 (IQR = 4-5, n = 21) (p < 0.05). Respondents noted that the benefits of a hackathon were that it was very engaging, and brought in diversity of thought and expertise. The drawbacks to the hackathon were that it was fast-paced, required prior knowledge and the virtual platform it was hosted on. Conclusion: Our study demonstrates that hackathons are an effective, inclusive and equitable way for students to engage in and learn about interdisciplinary working. It is important that as institutions recognise and develop global surgery courses, these courses reflect the interdisciplinary nature of the field.

Brain Metastasis from Pancreatic Cancer: Our Experience and Systematic Review.

OBJECTIVE: To systematically review existing literature on the neurosurgical management and outcomes of brain metastasis from pancreatic cancer in comparison with our institutional experience of this patient cohort. METHODS: Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, a systematic literature review was performed using PubMed, Ovid Embase, Scopus, and Web of Science databases from date of database inception to March 2022. Studies were selected based on predetermined inclusion and exclusion criteria. Simultaneously, a retrospective analysis was conducted of patients who underwent neurosurgical evaluation and treatment for intracranial metastatic lesions from pancreatic origin at a single institution. RESULTS: The original literature search yielded 292 articles, of which 17 studies comprising 23 patients with brain metastases of pancreatic origin were ultimately selected. Median overall survival from primary diagnosis of pancreatic cancer was 22 months (interquartile range: 3-84) and 3 months (interquartile range: 1-36) after diagnosis of brain metastasis. In our institutional cohort, 4 patients were identified with a median overall survival of 30.5 months (interquartile range: 2-108). Our institutional cohort experienced a prolonged median overall survival (3 months vs. 30.5 months, P = 0.03) compared with the literature. CONCLUSIONS: Brain metastasis from pancreatic cancer is rare and associated with a fatal outcome. However, based on the data presented in this review, patient-specific and treatment-related factors could signal better prognosis. Further studies are needed to elucidate multimodal therapy and survival to suggest a more personalized decision-making process.

Global Neurosurgery in the Context of Global Public Health Practice-A Literature Review of Case Studies.

Neurosurgical conditions are a substantial contributor to surgical burden worldwide, with low- and middle-income countries carrying a disproportionately large part. Policy initiatives such as the National Surgical, Obstetrics and Anesthesia Plans and Comprehensive Policy Recommendations for the Management of Spina Bifida and Hydrocephalus in Low-and-Middle-Income countries have highlighted the need for an intersectoral approach, not just at the hospital level but on a large scale encompassing national public health strategies. This article aims to show through case studies how addressing this surgical burden is not limited to the clinical context but extends to public health strategies as well. For example, vitamin B12 and folic acid are micronutrients that, if not at adequate levels, can result in debilitating neurosurgical conditions. In Ethiopia, through coalesced efforts between neurosurgeons and policy makers, the government has made strides in implementing food fortification programs at a national level to address the neurosurgical burden. Traumatic brain injuries (TBIs) are another neurosurgical burden that unevenly affects LMICs. Countries such as Colombia and India have shown the importance of legislation and enforcement, coupled with robust data collection and auditing systems; strong academic advocacy of neurosurgeons can drastically reduce TBIs. Despite the importance of public health efforts in addressing neurosurgical conditions, there is a lack of neurosurgeon involvement in public health and lack of integration of neurosurgical burden in national health planning systems. It is imperative that neurosurgeons advocate for and are included in aspects of public health policy. Neurosurgery does not stop within the bounds of the hospital, and neither should the role of a neurosurgeon.

Global Landscape of Glioblastoma Multiforme Management in the Stupp Protocol Era: Systematic Review Protocol.

BACKGROUND: Glioblastoma multiforme is the most common and aggressive primary adult brain neoplasm. The current standard of care is maximal safe surgical resection, radiotherapy with concomitant temozolomide, followed by adjuvant temozolomide according to the Stupp protocol. Although the protocol is well adopted in high-income countries (HICs), little is known about its adoption in low- and middle-income countries (LMICs). The aim of this study is to describe a protocol design for a systematic review of published studies outlining the differences in GBM management between HICs and LMICs. METHODS: A systematic review will be conducted. MedLine via Ovid, Embase and Global Index Medicus will be searched from inception to date in order to identify the relevant studies. Adult patients (>18 years) with histologically confirmed primary unifocal GBM will be included. Surgical and chemoradiation management of GBM tumours will be considered. Commentaries, original research, non-peer reviewed pieces, opinion pieces, editorials and case reports will be included. RESULTS: Primary outcomes will include rates of complications, disability-adjusted life years (DALYs), prognosis, progression-free survival (PFS), overall survival (OS) as well as rate of care abandonment and delay. Secondary outcomes will include the presence of neuro-oncology subspecialty training programs. DISCUSSION: This systematic review will be the first to compare the current landscape of GBM management in HICs and LMICs, highlighting pertinent themes that may be used to optimise treatment in both financial brackets. SYSTEMATIC REVIEW REGISTRATION: The protocol has been registered on the International Prospective Register of Systematic Reviews (PROSPERO; registration number: CRD42020215843). HIGHLIGHTS: Glioblastoma multiforme (GBM) remains the most common primary adult cerebral neoplasm, with an age-adjusted incidence rate of 3.22 per 100,000 population and a 5-year survival rate of 6.8%Despite the well-evidenced efficacy of Stupp protocol, the implementation of this approach bears an institutional and individual financial burden that is particularly notable in low- and middle-income countries (LMICs)This systematic review will be the first to compare the current landscape of GBM management in HICs and LMICs, highlighting pertinent themes that may be used to optimise treatment in both financial brackets.