In the present study, among approaches examined, the posterior interhemispheric parasplenial transprecuneus approach placed fewer eloquent tracts at risk; however, traversing the sledge runner and the forceps major is unavoidable by this approach. OBJECTIVE The aim of this study is to provide essential information for endoscopic transforaminal approach by performing morphometric analysis of the triangular working zone (TWZ) in fresh cadavers. METHODS Fifteen fresh human cadavers (9 women and 6 men) with no history of spinal surgery were used in this study. Anatomic dissection of 150 foraminal levels were performed. Significant surgical landmarks constructing TWZ were measured bilaterally from L1-2 to L5-S1 on 15 fresh cadavers. The relationship between traversing roots and intervertebral discs was defined. RESULTS Base, height, and hypotenuse measurements of TWZ were longer as the level lowered. Mean base height and hypotenuse of TWZ were 12.15 mm, 11.29 mm, and 16.69 mm (L1-2); 17.94 mm, 17.18 mm, and 28.03 mm (L5-S1), respectively. TWZ was triangular shaped at the upper lumbar levels (L1-2, L2-3, and L3-4), and trapezoid at the lower lumbar levels (L4-5 and L5-S1). Going down the levels, the exiting root angle was narrower, the mean exiting angle of the L5 root being 28.23°. All L2 and L3 traversing roots and nearly all L4 traversing roots (86.7%) originated from below the disc level. Forty percent of L5 traversing roots originated above the disc level, and 53.3% originated at the disc level. Most S1 traversing roots originated at the proximal margin of the disc level (80%). CONCLUSIONS Our study reveals a detailed morphometric analysis of TWZ. Understanding the foraminal anatomy is crucial for safely performing transforaminal endoscopic surgery. The learning curve of transforaminal surgery can be reduced by garnering knowledge of TWZ anatomy. OBJECTIVE For adult patients undergoing surgical decompression for Chiari malformation type I (CM-I), the patient-level factors that influence extended length of stay (LOS) are relatively unknown. The aim of this study was to investigate the impact of patient-baseline comorbidities, demographics, and postoperative complications on extended LOS after intervention after adult CM-I decompression surgery. METHODS A retrospective cohort study using the National Inpatient Sample years 2010-2014 was performed. Adults (≥18 years) with a primary diagnosis of CM-I undergoing surgical decompression were identified. Weighted patient demographics, comorbidities, complications, LOS, disposition, and total cost were recorded. A multivariate logistic regression was used to determine the odds ratio for risk-adjusted LOS. RESULTS A total of 29,961 patients were identified, 6802 of whom (22.7%) had extended LOS. The extended LOS cohort had a significantly greater overall complication rate (normal LOS, 10.6% vs. extended LOS, 29.1%; P 1 complication. CONCLUSIONS Our study shows that extended LOS after adult CM-I decompression surgery may be influenced by multiple patient-level factors. Published by Elsevier Inc.OBJECTIVE This study bioinformatically analyzed aberrant genes and pathways for associations with glioblastoma development and prognosis. METHODS Gene Expression Omnibus (GEO) database was searched and four GEO datasets (GSE4290, GSE50161, GSE116520, and GSE90598) were retrieved for Limma and RobustRankAggreg (RRA) package analyses of differentially expressed genes (DEGs) between glioblastoma and normal brain tissues. Functional enrichment analysis was conducted for the main biological functions of these DEGs, while the hub genes were identified using the protein-protein interaction (PPI) network and confirmed for transcriptional and translational levels using the Cancer Genome Atlas (TCGA), the Genotype-Tissue Expression (GTEx), and the Human Protein Atlas (HPA) data. The prognostic values of these hub genes were analyzed using the Chinese Glioma Genome Atlas (CGGA). Their transcriptional factor (TFs) regulation network was constructed to assess the roles in glioblastoma development and progression. RESULTS A total of 473 DEGs (182 upregulated and 291 downregulated) were identified and the hub genes (including CCNB1, CDC20, CCNB2, BUB1, and CCNA2) were revealed in module 1 and enriched in the cell cycle or p53 signaling pathway. The highly expressed CCNB1, CDC20, BUB1, and CCNA2 in glioblastoma patients were associated with poor overall survival, while TAF7 could upregulate expression of CCNB1 and CCNA2 and GTF2E2 could upregulate CDC20 expression in glioblastoma. CONCLUSION This study revealed several DEGs in glioblastoma, and aberrant expression of their hub genes was associated with glioblastoma pathogenesis and poor prognosis, especially the signaling axes of TAF7/CCNB1, TAF7/CCNA2, and GTF2E2/CDC20. BACKGROUND Hemichorea may point to a structural lesion in the contralateral basal ganglia with a large list of possible causes. Cavernous angioma may be rarely a possible cause for acute appearance of this movement disorder. CASE DESCRIPTION We present a rare case of a 32-year-old female patient with hemichorea caused by a cavernoma (or cavernous angioma) in the contralateral insula and putamen with complete improvement of symptoms with surgical resection of the lesion. CONCLUSIONS We believe that surgical resection of basal ganglia cavernomas may be feasible with minor risks and resolution of clinical symptoms in the immediate postoperative period. BACKGROUND The insertion of a subdural drain (SDD) after burr-hole drainage of chronic subdural hematoma (cSDH) was shown to reduce recurrence rate and improve outcome at 6 months.  https://www.selleckchem.com/products/nf-kb-activator-1.html  However, studies analyzing the rate of drain misplacement and complications associated with drain misplacement are sparse. METHODS We analyzed retrospectively a cohort of consecutive patients undergoing burr-hole drainage for cSDH in 2 institutes. Drain type (subperiosteal drain vs. SDD), drain misplacement rate, and drain-associated complications were analyzed. We explored potential risk factors for drain misplacement and associated complications in the SDD subgroup using univariate and multivariate analysis. Drain misplacement was defined as incorrect drain position exceeding the subdural cavity and was categorized into drain misplacement without radiologic sequelae, drain misplacement causing radiologically confirmed iatrogenic bleeding, and drain misplacement causing neurologic symptoms. RESULTS Of 463 included patients, 290 (62.