Combined use of minimal access craniotomy, intraoperative magnetic resonance imaging, and awake functional mapping for the resection of gliomas in 61 patients

2020 ◽  
Vol 132 (1) ◽  
pp. 159-167 ◽  
Author(s):  
Benjamin B. Whiting ◽  
Bryan S. Lee ◽  
Vaidehi Mahadev ◽  
Hamid Borghei-Razavi ◽  
Sanchit Ahuja ◽  
...  
Keyword(s):  
Case Series ◽  
Functional Mapping ◽  
Intraoperative Mri ◽  
Neurophysiological Monitoring ◽  
Low Grade ◽  
Minimal Access ◽  
Retrospective Case ◽  
Who Grade ◽  
Motor Mapping ◽  
Combined Use

OBJECTIVECurrent management of gliomas involves a multidisciplinary approach, including a combination of maximal safe resection, radiotherapy, and chemotherapy. The use of intraoperative MRI (iMRI) helps to maximize extent of resection (EOR), and use of awake functional mapping supports preservation of eloquent areas of the brain. This study reports on the combined use of these surgical adjuncts.METHODSThe authors performed a retrospective review of patients with gliomas who underwent minimal access craniotomy in their iMRI suite (IMRIS) with awake functional mapping between 2010 and 2017. Patient demographics, tumor characteristics, intraoperative and postoperative adverse events, and treatment details were obtained. Volumetric analysis of preoperative tumor volume as well as intraoperative and postoperative residual volumes was performed.RESULTSA total of 61 patients requiring 62 tumor resections met the inclusion criteria. Of the tumors resected, 45.9% were WHO grade I or II and 54.1% were WHO grade III or IV. Intraoperative neurophysiological monitoring modalities included speech alone in 23 cases (37.1%), motor alone in 24 (38.7%), and both speech and motor in 15 (24.2%). Intraoperative MRI demonstrated residual tumor in 48 cases (77.4%), 41 (85.4%) of whom underwent further resection. Median EOR on iMRI and postoperative MRI was 86.0% and 98.5%, respectively, with a mean difference of 10% and a median difference of 10.5% (p < 0.001). Seventeen of 62 cases achieved an increased EOR > 15% related to use of iMRI. Seventeen (60.7%) of 28 low-grade gliomas and 10 (30.3%) of 33 high-grade gliomas achieved complete resection. Significant intraoperative events included at least temporary new or worsened speech alteration in 7 of 38 cases who underwent speech mapping (18.4%), new or worsened weakness in 7 of 39 cases who underwent motor mapping (18.0%), numbness in 2 cases (3.2%), agitation in 2 (3.2%), and seizures in 2 (3.2%). Among the patients with new intraoperative deficits, 2 had residual speech difficulty, and 2 had weakness postoperatively, which improved to baseline strength by 6 months.CONCLUSIONSIn this retrospective case series, the combined use of iMRI and awake functional mapping was demonstrated to be safe and feasible. This combined approach allows one to achieve the dual goals of maximal tumor removal and minimal functional consequences in patients undergoing glioma resection.

scholarly journals Gliosarcoma vs. glioblastoma: a retrospective case series using molecular profiling

BMC Neurology ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Christopher Dardis ◽  
David Donner ◽  
Nader Sanai ◽  
Joanne Xiu ◽  
Sandeep Mittal ◽  
...  
Keyword(s):  
Copy Number ◽  
Epithelial To Mesenchymal Transition ◽  
Clinical Care ◽  
Case Series ◽  
Molecular Profiling ◽  
Retrospective Case ◽  
Who Grade ◽  
Exact Test ◽  
Mesenchymal Transition ◽  
Dna And Rna

Abstract Background Gliosarcoma (GS) refers to the presence of mesenchymal differentiation (as seen using light microscopy) in the setting of glioblastoma (GB, an astrocytoma, WHO Grade 4). Although the same approach to treatment is typically adopted for GS and GB, there remains some debate as to whether GS should be considered a discrete pathological entity. Differences between these tumors have not been clearly established at the molecular level. Methods Patients with GS (n=48) or GB (n=1229) underwent molecular profiling (MP) with a pan-cancer panel of tests as part of their clinical care. The methods employed included next-generation sequencing (NGS) of DNA and RNA, copy number variation (CNV) of DNA and immunohistochemistry (IHC). The MP comprised 1153 tests in total, although results for each test were not available for every tumor profiled. We analyzed this data retrospectively in order to determine if our results were in keeping with what is known about the pathogenesis of GS by contrast with GB. We also sought novel associations between the MP and GS vs. GB which might improve our understanding of pathogenesis of GS. Results Potentially meaningful associations (p<0.1, Fisher’s exact test (FET)) were found for 14 of these tests in GS vs. GB. A novel finding was higher levels of proteins mediating immuno-evasion (PD-1, PD-L1) in GS. All of the differences we observed have been associated with epithelial-to-mesenchymal transition (EMT) in other tumor types. Many of the changes we saw in GS are novel in the setting of glial tumors, including copy number amplification in LYL1 and mutations in PTPN11. Conclusions GS shows certain characteristics of EMT, by contrast with GB. Treatments targeting immuno-evasion may be of greater therapeutic value in GS relative to GB.

scholarly journals Impact of Pathological Stratification on the Clinical Outcomes of Advanced Well-Differentiated/Dedifferentiated Liposarcoma Treated with Trabectedin

Cancers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 1453
Author(s):  
Chiara Fabbroni ◽  
Giovanni Fucà ◽  
Francesca Ligorio ◽  
Elena Fumagalli ◽  
Marta Barisella ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Proportional Hazards ◽  
Case Series ◽  
Progression Free Survival ◽  
Cox Proportional Hazards ◽  
Low Grade ◽  
High Grade ◽  
Retrospective Case ◽  
Well Differentiated ◽  
The Impact

Background. We previously showed that grading can prognosticate the outcome of retroperitoneal liposarcoma (LPS). In the present study, we aimed to explore the impact of pathological stratification using grading on the clinical outcomes of patients with advanced well-differentiated LPS (WDLPS) and dedifferentiated LPS (DDLPS) treated with trabectedin. Patients: We included patients with advanced WDLPS and DDLPS treated with trabectedin at the Fondazione IRCCS Istituto Nazionale dei Tumori between April 2003 and November 2019. Tumors were categorized in WDLPS, low-grade DDLPS, and high-grade DDLPS according to the 2020 WHO classification. Patients were divided in two cohorts: Low-grade (WDLPS/low-grade DDLPS) and high-grade (high-grade DDLPS). Results: A total of 49 patients were included: 17 (35%) in the low-grade cohort and 32 (65%) in the high-grade cohort. Response rate was 47% in the low-grade cohort versus 9.4% in the high-grade cohort (logistic regression p = 0.006). Median progression-free survival (PFS) was 13.7 months in the low-grade cohort and 3.2 months in the high-grade cohort. Grading was confirmed as an independent predictor of PFS in the Cox proportional-hazards regression multivariable model (adjusted hazard ratio low-grade vs. high-grade: 0.45, 95% confidence interval: 0.22–0.94; adjusted p = 0.035). Conclusions: In this retrospective case series, sensitivity to trabectedin was higher in WDLPS/low-grade DDLPS than in high-grade DDLPS. If confirmed in larger series, grading could represent an effective tool to personalize the treatment with trabectedin in patients with advanced LPS.

SP6.1.10 Can gallbladder polyp surveillance be justified? Experience of a large DGH

2021 ◽  
Vol 108 (Supplement_7) ◽  
Author(s):  
Nicholas Bradley ◽  
Michael Wilson ◽  
Christopher Shearer ◽  
Timothy Heron ◽  
Katie Robertson ◽  
...  
Keyword(s):  
Incidental Finding ◽  
Case Series ◽  
District General Hospital ◽  
Pathological Examination ◽  
Histopathological Analysis ◽  
Low Grade ◽  
Retrospective Case ◽  
Gallbladder Polyps ◽  
Abnormal Pathology ◽  
Gallbladder Malignancy

Abstract Aims Gallbladder polyps are typically an incidental finding on sonographic or pathological examination with an estimated prevalence of 0.3 – 9.5%. Their role as a precursor to gallbladder malignancy is disputed. The 2017 European Joint Society Guidelines (ESGAR/EAES/EFISDS/ESGE) aim to standardise management of gallbladder polyps detected prior to cholecystectomy. We aim to describe our experience in the management of gallbladder polyps in a district general hospital. Methods This single centre retrospective case series included consecutive cholecystectomies over an 8-year period, identified through pathology records. Medical records were interrogated to identify the presence of gallbladder polyps identified pre-operatively and at subsequent histopathological analysis. Results 3835 cases were included. Four cases (0.1%) had an adenocarcinoma identified; none of these had pre-operatively identified polyps. Two cases (0.05%) were found to have lesions with high-grade dysplasia, 1 of which had a 17mm polyp preoperatively. One case (0.03%) had cellular atypia, without a pre-operative polyp. Forty six cases (1.2%) were found to have low-grade dysplasia; 1 (2.2%) of these had adenomyomatosis pre-operatively but none had pre-operative polyps. Overall, 53 patients (1.4%) had abnormal pathology with only 1 (1.9%) of these having a pre-operative polyp identified. Conclusions Our results suggest that in the real-world setting, intensive surveillance of gallbladder polyps has limited utility in identifying cases of gallbladder malignancy. The burden on services produced by adherence to strict surveillance guidelines is difficult to justify and a less arduous approach is unlikely to significantly influence the management or outcome in patients with gallbladder malignancy.

scholarly journals Factors triggering an additional resection and determining residual tumor volume on intraoperative MRI: analysis from a prospective single-center registry of supratentorial gliomas

2016 ◽  
Vol 40 (3) ◽  
pp. E4 ◽  
Author(s):  
Moritz Scherer ◽  
Christine Jungk ◽  
Alexander Younsi ◽  
Philipp Kickingereder ◽  
Simon Müller ◽  
...  
Keyword(s):  
Prediction Model ◽  
Tumor Volume ◽  
Case Series ◽  
Residual Tumor ◽  
Intraoperative Mri ◽  
Related Factors ◽  
Glioma Surgery ◽  
Who Grade ◽  
Supratentorial Gliomas ◽  
Additional Resection

OBJECTIVE In this analysis, the authors sought to identify variables triggering an additional resection (AR) and determining residual intraoperative tumor volume in 1.5-T intraoperative MRI (iMRI)-guided glioma resections. METHODS A consecutive case series of 224 supratentorial glioma resections (WHO Grades I–IV) from a prospective iMRI registry (inclusion dates January 2011–April 2013) was examined with univariate and multiple regression models including volumetric data, tumor-related, and surgeon-related factors. The surgeon's expectation of an AR, in response to a questionnaire completed prior to iMRI, was evaluated using contingency analysis. A machine-learning prediction model was applied to consider if anticipation of intraoperative findings permits preoperative identification of ideal iMRI cases. RESULTS An AR was performed in 70% of cases after iMRI, but did not translate into an accumulated risk for neurological morbidity after surgery (p = 0.77 for deficits in cases with AR vs no AR). New severe persistent deficits occurred in 6.7% of patients. Initial tumor volume determined frequency of ARs and was independently correlated with larger tumor remnants delineated on iMRI (p < 0.0001). Larger iMRI volume was further associated with eloquent location (p = 0.010) and recurrent tumors (p < 0.0001), and with WHO grade (p = 0.0113). Greater surgical experience had no significant influence on the course of surgery. The surgeon's capability of ruling out an AR prior to iMRI turned out to incorporate guesswork (negative predictive value 43.6%). In a prediction model, AR could only be anticipated with 65% accuracy after integration of confounding variables. CONCLUSIONS Routine use of iMRI in glioma surgery is a safe and reliable method for resection guidance and is characterized by frequent ARs after scanning. Tumor-related factors were identified that influenced the course of surgery and intraoperative decision-making, and iMRI had a common value for surgeons of all experience levels. Commonly, the subjective intraoperative impression of the extent of resection had to be revised after iMRI review, which underscores the manifold potential of iMRI guidance. In combination with the failure to identify ideal iMRI cases preoperatively, this study supports a generous, tumor-oriented rather than surgeon-oriented indication for iMRI in glioma surgery.

Primary acquired melanosis/melanoma: utility of conjunctival map biopsy

2020 ◽  
pp. bjophthalmol-2020-317772
Author(s):  
Hansell Soto ◽  
Randy C Bowen ◽  
Vishal Raval ◽  
Gabrielle Yeaney ◽  
Arun Singh
Keyword(s):  
Case Series ◽  
Treated Group ◽  
Low Grade ◽  
Retrospective Case ◽  
Tertiary Referral Centre ◽  
Primary Acquired Melanosis ◽  
Diagnostic Biopsy ◽  
Severe Atypia ◽  
Grade 3

AimTo assess the role of map biopsy in patients with conjunctival primary acquired melanosis (PAM)/melanoma.MethodsRetrospective case series of 400 conjunctival biopsy samples of 51 unique patients in a tertiary referral centre.ResultsEach patient underwent one diagnostic biopsy and several additional map biopsies (range 2–7) providing a total of 400 samples for the analysis (55 diagnostic biopsies, 345 map biopsies). The median age was 63 years old (range 20–88) with women representing 67% of the cases. Histopathological findings were graded as negative for melanosis/normal (grade 0), melanosis without atypia (grade 1), melanosis with mild atypia (grade 2), melanosis with severe atypia (grade 3) or invasive melanoma (grade 4). Clinicopathologic concordance was observed in the majority of the map biopsies (313, 91%) (positive: clinical+/path+ (57,17%), negative: clinical−/path− (256, 74%)). Three discordant samples (clinical−/path+) represented PAM sine pigmento. The histopathological spectrum of atypia was absent (40, 73%) or limited (11, 20%) in the majority of cases with tendency to cluster as low-grade or high-grade atypia. Map biopsy led to the identification of six patients (11%) with severe atypia, requiring topical mitomycin (MMC). Similarly, in 29 cases, periodic observation without topical MMC was recommended. One case of invasive melanoma transformation occurred in the MMC-treated group.ConclusionsMap biopsy enhances overall assessment of the anatomic and pathologic extent, impacting use of adjuvant topical chemotherapy. In absence of map biopsy, it would be impossible to diagnose PAM sine pigmento. Additional corroborative work is needed to validate our observations.

scholarly journals Outcomes of Single-Institution Retrospective Case Series on Observation Alone Following Atypical Meningioma Resection

Neurosurgery ◽  
2019 ◽  
Vol 66 (Supplement_1) ◽  
Author(s):  
Lauren Stone ◽  
Hugh D Moulding ◽  
Nimisha Deb ◽  
Charles T Lee
Keyword(s):  
Median Time ◽  
Tumor Resection ◽  
Case Series ◽  
Single Institution ◽  
Retrospective Case ◽  
Who Grade ◽  
Entire Cohort ◽  
Simpson Grade ◽  
Retrospective Case Series ◽  
Significant Difference

Abstract INTRODUCTION Observation alone vs adjuvant radiotherapy (RT) following gross total resection (GTR) of WHO Grade II (G2) meningiomas is controversial. Local recurrence (LR) rates have been reported to be similar. We present LR rates in patients who were observed following G2 meningioma resection and correlate with Simpson grades. METHODS Patients from 2005 to 2018 who underwent observation alone following surgical resection of G2 meningiomas at a single institution were analyzed in a retrospective case series. Simpson grades were used to classify extent of tumor resection. Patients were followed with magnetic resonance imaging (MRI) or computed tomography (CT) imaging at 1-mo, 3-mo, 6-mo, and 12-mo postoperatively, then annually thereafter to monitor for recurrence. Descriptive 2-yr, and 5-yr LR rates for our entire cohort and time to recurrence by Simpson grade are reported. RESULTS A total of 28 patients with Simpson 1 to 4 resections for G2 meningiomas did not undergo adjuvant RT and were included. Median follow-up (FU) was 34 mo [Interquartile range (IQR): 18-55 mo]. Median time to LR was 55 mo (IQR: 44-65 mo) across our entire cohort. Of 14 patients with Simpson 1 resection, there was 1 LR at 68 mo. Of 3 patients with Simpson 2 resection, there was 1 LR at 49 mo. Of 9 patients with Simpson 3 resection, there were 5 recurrences; median time to LR was 61 mo. Of 2 patients with Simpson 4 resections, there was 1 LR at 3 mo. Overall, 2-yr LR was 3.6% and 5-yr LR was 10.7%. There was no statistically significant difference in LR rate between Simpson 1 vs Simpson 2 to 4 resections (P = .11). CONCLUSION Our results are consistent with the low recurrence rate of G2 meningiomas undergoing observation along following GTR in current literature. Simpson grade 1 resections have low overall LR rate and larger scale studies are needed to determine if statistical significance exists.

Supracerebellar infratentorial endoscopically controlled resection of pineal lesions: case series and operative technique

2011 ◽  
Vol 8 (6) ◽  
pp. 554-564 ◽  
Author(s):  
Timothy Uschold ◽  
Adib A. Abla ◽  
David Fusco ◽  
Ruth E. Bristol ◽  
Peter Nakaji
Keyword(s):  
Single Case ◽  
Clinical Manifestations ◽  
Case Series ◽  
Pineal Region ◽  
Third Ventriculostomy ◽  
Low Grade ◽  
Who Grade ◽  
Estimated Blood Loss ◽  
The Mean

Object The heterogeneous clinical manifestations and operative characteristics of pathological entities in the pineal region represent a significant challenge in terms of patient selection and surgical approach. Traditional surgical options have included endoscopic transventricular resection; open supratentorial microsurgical approaches through the midline, choroidal fissure, lateral ventricle, and tentorium; and supracerebellar infratentorial (SCIT) approaches through the posterior fossa. The object of the current study was to review the preoperative characteristics and outcomes for a cohort of patients treated purely via the novel endoscopically controlled SCIT approach. Methods A single-institution series of 9 consecutive patients (4 male and 5 female patients [10 total cases]; mean age 21 years, range 6–37 years) treated via the endoscopically controlled SCIT approach for a pathological entity in the pineal region was retrospectively reviewed. The mean follow-up time was 13.2 months. Results The endoscopically controlled SCIT approach was successfully used to approach a variety of pineal lesions, including pineal cysts (6 patients), epidermoid tumor, WHO Grade II astrocytoma (initial biopsy and recurrence), and malignant mixed germ cell tumor (1 patient each). Gross-total resection and/or adequate cyst fenestration was achieved in 8 cases. Biopsy with conservative debulking was performed for the single case of low-grade astrocytoma and again at the time of recurrence. The mean preoperative tumor and cyst volumes were 9.9 ± 4.4 and 3.7 ± 3.2 cm3, respectively. The mean operating times were 212 ± 71 minutes for tumor cases and 177 ± 72 minutes for cysts. Estimated blood loss was less than 150 ml for all cases. A single case (pineal cyst) was converted to an open microsurgical approach to enhance visualization. There were no operative complications, as well as no documented CSF leaks, additional CSF diversion procedures, or air emboli. Seven patients underwent concomitant third ventriculostomy into the quadrigeminal cistern. At the time of the last follow-up evaluation, all patients had a stable or improved modified Rankin Scale score. Conclusions The endoscopically controlled SCIT approach may be used for the biopsy and resection of appropriately selected solid tumors of the pineal region, in addition to the fenestration and/or resection of pineal cysts. Preoperative considerations include patient presentation, anticipated disease and vascularity, degree of local venous anatomical distortion, and selection of optimal paramedian trajectory.

scholarly journals Atypical Enostoses—Series of Ten Cases and Literature Review

Medicina ◽  
2020 ◽  
Vol 56 (10) ◽  
pp. 534
Author(s):  
Thomas Bedard ◽  
Mujtaba Mohammed ◽  
Serenella Serinelli ◽  
Timothy A. Damron
Keyword(s):  
Osteoid Osteoma ◽  
Case Series ◽  
Low Grade ◽  
Gardner's Syndrome ◽  
Retrospective Case ◽  
Radiographic Appearance ◽  
Gardner’S Syndrome ◽  
Bone Island ◽  
Bony Lesions ◽  
Over Time

Bone islands (BI; enostoses) may be solitary or occur in the setting of osteopoikilosis (multiple bone islands) and are sometimes associated with Gardner’s Syndrome (osteopoikilosis and colonic polyposis). Characteristic features of bone islands are (1) absence of pain or local tenderness, (2) typical radio dense central appearance with peripheral radiating spicules (rose thorn), (3) Mean CT (computerized tomography) attenuation values above 885 Hounsfield units (HU) (4) absence of uptake on bone scan and (5) radiographic stability over time. However, when enostoses display atypical features of pain, unusual radiographic appearance, aberrant HU, increased radiotracer uptake, and/or enlargement, they can be difficult to differentiate from more sinister bony lesions such as osteoblastic metastasis, low grade central osteosarcoma, osteoid osteoma and osteoblastoma. In this retrospective case series, the demographic, clinical, radiographic, treatment and outcome for ten patients with eleven atypical bone islands (ABI) are presented, some showing associated pain (5), some with atypical radiographic appearance (3), some with increased activity on BS (4), some with documented enlargement over time (7), one with abnormal CT attenuation value, some in the setting of osteopoikilosis (2), one in the setting of Gardner’s Syndrome and one osteoid osteoma simulating a bone island. This series represents the spectrum of presentations of ABI. Comprehensive review of the literature reveals that the previous largest series of ABI showing enlargement as the atypical feature was in younger patients with jaw BI. Hence, this represents one of the largest series reported of ABI of all types in adults.

Dedifferentiated Chondrosarcoma in the Dog and Cat: A Case Series and Review of the Literature

2018 ◽  
Vol 54 (1) ◽  
pp. 50-59 ◽  
Author(s):  
Arathi Vinayak ◽  
Deanna R. Worley ◽  
Stephen J. Withrow ◽  
Dustin S. Adams ◽  
Barbara E. Powers
Keyword(s):  
Medical Records ◽  
Treatment Options ◽  
Case Series ◽  
Low Grade ◽  
Survival Times ◽  
Dedifferentiated Chondrosarcoma ◽  
Retrospective Case ◽  
Diagnostic Laboratory ◽  
Term Survival ◽  
Colorado State University

ABSTRACT This retrospective case series describes seven dogs and one cat diagnosed with dedifferentiated chondrosarcoma, an uncommon, aggressive variant of chondrosarcoma. The purpose of the study is to describe clinical, imaging, and histopathological findings of this tumor. Medical records and the diagnostic laboratory database at Colorado State University from 2000 to 2015 were reviewed and complete medical records were available for the eight animals in this report. Similar to what has been reported in people, poor long-term survival and high metastatic rate, particularly to the lungs, was observed in our case series. A bimorphic pattern on imaging (radiographs, computed tomography, and MRI) consisting of mineralized and nonmineralized areas was seen mirroring the high-grade sarcomatous component adjacent to a low-grade chondroid component seen histopathologically. A review of the human literature including suspected etiology, imaging findings, histopathology, and survival times with various treatment options is presented. This article describes the first reported cases of dedifferentiated chondrosarcoma in the veterinary literature. Early accurate recognition could lead to treatment plans tailored to this variant.

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