Asian journal of neurosurgery最新文献

{"title":"Bifrontal–Parietal Ratio: A Novel Risk Factor for Cerebrospinal Fluid Overdrainage after Ventriculoperitoneal Shunting","authors":"Chonnawee Chaisawasthomrong, Kriangsak Saetia","doi":"10.1055/s-0043-1775729","DOIUrl":"https://doi.org/10.1055/s-0043-1775729","url":null,"abstract":"Abstract Objective This study aimed to examine potential risk factors associated with cerebrospinal fluid overdrainage after ventriculoperitoneal (VP) shunting. Materials and Methods We retrospectively examined the medical records of hydrocephalus patients who underwent VP shunting at a single institution between January 2011 and December 2017 and had a minimum 3-year follow-up. Variables studied included age, gender, hydrocephalus etiology, symptoms, shunt valve, ventricular catheter entry point, and neurosurgical history, including history of external ventricular drainage. Radiographic variables included Evans index, bicaudate index, callosal angle, measurements of frontal lobe thickness, and bifrontal–parietal ratio. Results Among the 182 study patients, 11 experienced overdrainage. Age, gender, etiology, symptoms, and surgical history did not significantly differ between patients who experienced overdrainage and those who did not. Evans index, bicaudate index, and callosal angle did not significantly differ between the groups. Measurements of frontal lobe thickness and bifrontal–-parietal ratio were significantly lower in the overdrainage group. Conclusion Bifrontal–parietal ratio may be useful to predict overdrainage after VP shunt surgery.","PeriodicalId":94300,"journal":{"name":"Asian journal of neurosurgery","volume":"23 s1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135539919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role of Permeability Surface Area Product in Grading of Brain Gliomas using CT Perfusion","authors":"Ira Agrawal, Shahina Bano, Ajay Chaudhary, Arvind Ahuja","doi":"10.1055/s-0043-1774820","DOIUrl":"https://doi.org/10.1055/s-0043-1774820","url":null,"abstract":"Abstract Purpose The aim of this study was to evaluate the role of permeability surface area product in grading brain gliomas using computed tomography (CT) perfusion Materials and Methods CT perfusion was performed on 33 patients with brain glioma diagnosed on magnetic resonance imaging. Of these, 19 had high-grade glioma and 14 had low-grade glioma on histopathological follow-up. CT perfusion values were obtained and first compared between the tumor region and normal brain parenchyma. Then the relative values of perfusion parameters were compared between high- and low-grade gliomas. Cut-off values, sensitivity, specificity, and strength of agreement for each parameter were calculated and compared subsequently. A conjoint factor (permeability surface area product + cerebral blood volume) was also evaluated since permeability surface area product and cerebral blood volume are considered complimentary factors for tumor vascularity. Results All five perfusion parameters namely permeability surface area product, cerebral blood volume, cerebral blood flow, mean transit time, and time to peak were found significantly higher in the tumor region than normal brain parenchyma. Among these perfusion parameters, only relative permeability surface area product and relative cerebral blood volume were found significant in differentiating high- and low-grade glioma. Moreover, relative permeability surface area product was significantly better than all other perfusion parameters with highest sensitivity and specificity (97.74 and 100%, respectively, at a cut-off of 9.0065). Relative permeability surface area product had a very good agreement with the histopathology grade. The conjoint factor did not yield any significant diagnostic advantage over permeability surface area product. Conclusion Relative permeability surface area product and relative cerebral blood volume were helpful in differentiating high- and low-grade glioma; however, relative permeability surface area product was significantly better than all other perfusion parameters. Grading brain gliomas using relative permeability surface area product can add crucial value in their management and prognostication; hence, it should be evaluated in the routine CT perfusion imaging protocol.","PeriodicalId":94300,"journal":{"name":"Asian journal of neurosurgery","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135539922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydatid Cyst of the Cerebellopontine Cistern: Report of Two Cases with Literature Review","authors":"Hatim Belfquih, Ali Akhaddar","doi":"10.1055/s-0043-1775860","DOIUrl":"https://doi.org/10.1055/s-0043-1775860","url":null,"abstract":"Abstract Posterior fossa localization of a hydatid cyst is uncommon; in these cases, the cyst usually locates in the cerebellum. Localization within the subarachnoid spaces or the cerebrospinal fluid ventricular system is exceptional. In the present report, which appears to be the seventh in the literature, we describe two cases of a hydatid cyst in the cerebellopontine cistern. Magnetic resonance imaging findings revealed a nonneoplastic cystic lesion mimicking an arachnoid cyst. The hydatid nature of the cyst was unexpected preoperatively. In both cases, the cyst was successfully removed using the puncture, aspiration, irrigation, and resection technique via a retrosigmoid approach. Histopathological examination confirmed the cysts to be Echinococcus granulosus in nature. Hydatid cyst may be considered in the differential diagnosis of arachnoid cysts of the cerebellopontine cistern to determine which surgical procedure to perform and to avoid unexpected complications. Previous published cases were also discussed.","PeriodicalId":94300,"journal":{"name":"Asian journal of neurosurgery","volume":"11 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135539488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correlation of Venous Blood Sugar Measured by Lab Method and Capillary Blood Sugar Measured by Glucometer in Neurosurgical Patients Receiving Dexamethasone","authors":"Jyoti Sharma, Renu Bala, Seema Singh","doi":"10.1055/s-0043-1775569","DOIUrl":"https://doi.org/10.1055/s-0043-1775569","url":null,"abstract":"Abstract Background Brain is vulnerable to extreme blood glucose levels that may occur due to multiple factors in neurosurgical patients; perioperative use of dexamethasone is the most common. Thus, frequent monitoring of blood sugar levels is advocated. This study aimed to assess correlation between venous blood sugar measured by lab method and capillary blood sugar by glucometer at various time intervals. Materials and Methods This prospective and observational study was conducted in 20 adult patients of either sex, American Society of Anesthesiologists grade I to III, scheduled to undergo brain tumor resection. The patients who were already on dexamethasone and received intraoperatively 8 mg dexamethasone were enrolled. Standard anesthesia technique and intraoperative monitoring were followed in all patients. Venous sample was withdrawn and blood sugar analyzed in laboratory, while at the same time capillary blood sugar was tested by glucometer. The sampling was done at baseline, 1 hourly after dexamethasone administration till 4 hours and then 8, 12, and 24 hours. The correlation between the two values was assessed. Results During the study, 160 venous and 160 capillary blood sugar levels were analyzed. Though capillary blood sugar levels were slightly higher than venous sugar levels, there was strong correlation between the two (Pearson correlation coefficient) with p-value less than 0.05 except at 24 hours when two values were not correlated. Conclusion Capillary blood sugar levels by glucometer have good correlation with venous sugar levels; therefore, this method may be adopted routinely for frequent blood sugar estimation as it is reliable, easy, and practical.","PeriodicalId":94300,"journal":{"name":"Asian journal of neurosurgery","volume":"23 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135539918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"When Operating on the Brain Eyes Matter","authors":"Kamlesh Kumari, Darshana Rathod, Tanvi Meshram, Namita Malhotra","doi":"10.1055/s-0043-1772829","DOIUrl":"https://doi.org/10.1055/s-0043-1772829","url":null,"abstract":"Eye protection during general anesthesia is essential to perioperative patient safety, especially in neurosurgery, where various head positions are used. Manual closure of the eyelids, taping them to keep them shut, ointments, goggles, soft contact lenses, and protective corneal shells are some methods tested and recommended for the protection of eyes in the perioperative period. Despite of these measures, the risks involved are eyelid bruising and edema owing to thinner skin on eyelids, poor barrier function, and poor surface lipids in the stratum corneum.[1] While rare, the most concerning and frequently cited eye injuries include corneal abrasion and blindness. Tegaderm (3M, St Paul, Minnesota, United States), a hypoallergenic latex-free adhesive with 0.03% incidence of ocular injuries by Anderson et al,[2] is commonly used to cover eyes in our institute.","PeriodicalId":94300,"journal":{"name":"Asian journal of neurosurgery","volume":"24 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135539917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulation-Based Bypass Training and Learning Curves—Resident Experience","authors":"Mohira Jalolova, Dragan Jankovic, Kento Sasaki, Riki Tanaka, Yoko Kato","doi":"10.1055/s-0043-1775859","DOIUrl":"https://doi.org/10.1055/s-0043-1775859","url":null,"abstract":"Abstract Introduction Bypass surgery is a challenging operative procedure that requires surgical excellence. Achieving the skills required for vascular surgery is difficult to master in the operating room without intensive microsurgical training. Various models have been developed to provide training to young neurosurgeons and increase dexterity and patient safety. Bypass surgery requires complex microsurgical techniques. Methods Microanastomosis training was performed on plastic tubes and chicken wings for 2 months. Each microanastomosis was evaluated by a senior author. Results An improvement in the quality and patency of microanastomosis was observed. Conclusion Microsurgical simulation training can contribute to the improvement of surgical skills and dexterity.","PeriodicalId":94300,"journal":{"name":"Asian journal of neurosurgery","volume":"14 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135678834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retrospective Evaluation of Cases Undergoing Stereotaxic Brain Biopsy","authors":"Abdullah Yolcu, Ezgi Akar, Fügen Vardar Aker, Selin Tural Emon","doi":"10.1055/s-0043-1774821","DOIUrl":"https://doi.org/10.1055/s-0043-1774821","url":null,"abstract":"Abstract Objective: The aim of this study is to evaluate the demographic, radiological and histopathological findings, tumoral biomarkers, and survival rates of patients who underwent a stereotactic brain biopsy and those diagnosed with glioblastoma, metastasis, and lymphoma, and the changes in the diagnosis distribution over the years. Materials and Methods: The patients who underwent stereotactic biopsy in our clinic between 2012 and 2020 were evaluated retrospectively. Metastasis, glioblastoma, and lymphoma cases were evaluated as three main groups and the others were excluded. P53 gene expression, isocitrate dehydrogenase (IDH) mutation, and Ki-67 values in glioblastoma cases and Bcl-2, Bcl-6 proteins, and Ki-67 values in lymphomas and their relationship with survival were evaluated. Results: High p53 expression was observed in 27.5% cases diagnosed with glioblastoma. IDH mutation was negative in all glioblastoma cases. Presence of Bcl-2 and Bcl-6 proteins was not associated with survival in lymphomas. Survival rate was significantly higher in cases diagnosed with lymphoma (26.9%) compared to those diagnosed with glioblastoma. A statistically significant increase was determined in patients diagnosed with lymphoma considering the distribution of diseases and incidence and in the distribution of other diagnoses over the years (p < 0.05). Conclusion: As per the distribution of the disease in recent times, it has been observed that there is an increase in lymphoma cases. Histopathology and biomarkers have great importance in the diagnosis and treatment of cerebral lesions. We think that our findings will be supported by studies in which larger patient population and detailed biomarkers will be studied.","PeriodicalId":94300,"journal":{"name":"Asian journal of neurosurgery","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135478327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Factors Associated with Intradiscal Vacuum Phenomenon after Traumatic Thoracolumbar Fracture","authors":"Takeshi Sasagawa, Hiroyuki Hayashi, Yasutaka Takagi","doi":"10.1055/s-0043-1775551","DOIUrl":"https://doi.org/10.1055/s-0043-1775551","url":null,"abstract":"Abstract Introduction Posttraumatic kyphosis of the thoracolumbar spine is a possible cause of deterioration of activities of daily living. Thus, postoperative kyphosis is an important issue in treating traumatic thoracolumbar fractures. The intradiscal vacuum phenomenon (IVP) after a traumatic thoracolumbar fracture is considered an important predictor of severe kyphosis after implant removal. However, the associated factors are not yet clear. Methods The study included data from 94 intervertebral discs on the cephalocaudal side of 47 fractured vertebrae of 45 patients for traumatic thoracolumbar fracture due to high-energy trauma. We assessed the demographics of patients (age, sex, cause of injury, location of injured vertebra, fracture type, cephalocaudal side), imaging finding (kyphosis angle of fractured vertebra at the injury, endplate fracture on computed tomography [CT], intervertebral injury on magnetic resonance image [MRI]), and IVP on CT conducted more than 6 months after surgery. We divided the intervertebral discs into an IVP group and a non-IVP group. To identify factors associated with an IVP, univariate analysis and multivariate logistic regression analysis were conducted. Results IVP was observed in 27 (29%) of 94 intervertebral discs on CTs conducted at an average of 14.0 months postoperatively. In univariate analysis, the IVP group (n = 27) had a significantly more cephalic side of the injured vertebra, endplate fracture on CT, and disc injury on MRI compared with the non-IVP group (n = 67). A multivariate logistic regression analysis was conducted to identify factors associated with IVP. The cephalic side (odds ratio [OR] = 4.183, 95% confidence interval [CI] = 1.269–13.785) and endplate fracture on CT (OR = 9.564, 95% CI = 1.940–47.143) were identified as independent factors associated with IVP. Conclusions IVP was observed in 27 (29%) of 94 intervertebral discs. The cephalic side and endplate fracture on CT were identified as independent factors associated with IVP.","PeriodicalId":94300,"journal":{"name":"Asian journal of neurosurgery","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135534789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Medulloblastoma with Subcutaneous Spread: A Rare Entity","authors":"Siddharth Srinivasan, Ajay Hegde, Rajesh Nair, Girish Menon","doi":"10.1055/s-0043-1774822","DOIUrl":"https://doi.org/10.1055/s-0043-1774822","url":null,"abstract":"Abstract Medulloblastoma is the most common malignant pediatric brain tumor. Histological subclassification and adjuvant therapy have improved prognostication and outcome. Extraneural metastasis remains a poor prognostic factor and subcutaneous seeding is rarely encountered and reported in the pediatric population. We report a 3-year-old child who rapidly presented with subcutaneous seeding a month following gross total resection of his tumor.","PeriodicalId":94300,"journal":{"name":"Asian journal of neurosurgery","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135534478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Squash Cytology Diagnosing Plasmacytoma of Frontal Bone as First Presentation of Nonsecretory Multiple Myeloma","authors":"Vaishali B. Nagose, Swapnil B. Patil, Neha A. Mahajan","doi":"10.1055/s-0043-1774397","DOIUrl":"https://doi.org/10.1055/s-0043-1774397","url":null,"abstract":"Abstract Plasmacytoma of bone is one of the criteria for diagnosing plasma cell myeloma (multiple myeloma). A plasmacytoma involving a frontal bone is unusual, with only few being reported so far. Also, when typical clinical presentation is absent, diagnosis is usually not suspected clinicoradiologically. We report a rare case of frontal bone plasmacytoma presenting as a lump over the forehead, the squash cytology of which gave the diagnosis of neoplastic etiology. Thus, squash cytology helped in early and definitive diagnosis in this patient, hastening meticulous diagnostic investigations and appropriate management. With full workup, the final diagnosis of a nonsecretory multiple myeloma was made.","PeriodicalId":94300,"journal":{"name":"Asian journal of neurosurgery","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135534876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}