48,546 results match your criteria Glioblastoma Multiforme

The role of shikonin in improving 5-aminolevulinic acid-based photodynamic therapy and chemotherapy on glioblastoma stem cells.

Photodiagnosis Photodyn Ther 2022 Jun 24:102987. Epub 2022 Jun 24.

Laboratory of Tumor Immunology, LIFE Center, LMU Klinikum, University Munich, 82151 Planegg, Germany; Department of Urology, LMU Klinikum, University Munich, 82151 Planegg, Germany.

Glioblastoma multiforme remains a malignant neoplasia with a median survival of less than two years and without satisfactory therapeutic options. The so-called glioblastoma stem cells escape the established radio- and chemotherapies and lead to tumor recurrence in most cases. The alkaloid Shikonin with its various anti stem cell properties and the interstitial photodynamic therapy with 5-aminolevulinic acid seem to be promising new options in the therapy of glioblastoma. Read More

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The Intraoperative Utilization of Multi-modalities Could Improve the Prognosis of Adult Glioblastoma: A Single Center Observational Study.

World Neurosurg 2022 Jun 24. Epub 2022 Jun 24.

Glioma Surgery Division, Neurologic Surgery Department, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China; Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China; Brain Function Laboratory, Neurosurgical Institute of Fudan University, Shanghai, China; National Center for Neurological Disorders, Shanghai, China.

Objective: In recent years, numerous neurosurgical multimodal techniques have been utilized to maximize tumor resection safely and effectively. However, the synergetic effects of neurosurgical multi-modalities on the survival of glioblastoma patients remain unclear. This study evaluated the role of intraoperative utilization of multi-modalities in glioblastoma patients. Read More

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Nanomedicine for Glioblastoma: Progress and Future Prospects.

Semin Cancer Biol 2022 Jun 24. Epub 2022 Jun 24.

Department of Molecular Biology, Beykoz Institute of Life Sciences and Biotechnology, Bezmialem Vakif University, Yalıköy St., Beykoz, Istanbul, Turkey; Department of Neurosurgery, Bezmialem Vakif University Medical School, Vatan Street, Fatih, Istanbul, Turkey. Electronic address:

Glioblastoma is the most aggressive form of brain tumor, accounting for the highest mortality and morbidity rates. Current treatment for patients with glioblastoma includes maximal safe tumor resection followed by radiation therapy with concomitant temozolomide (TMZ) chemotherapy. The addition of TMZ to the conformal radiation therapy has improved the median survival time only from 12 months to 16 months in patients with glioblastoma. Read More

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Phenylboronic Acid-Functionalized Copolypeptides: Facile Synthesis and Responsive Dual Anticancer Drug Release.

Biomacromolecules 2022 Jun 27. Epub 2022 Jun 27.

Biomedical Polymers Laboratory, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, China.

The incorporation of a phenylboronic acid group has appeared as an attractive strategy to build smart drug delivery systems. Here, we report novel synthesis of phenylboronic acid-functionalized copolypeptides based on an l-boronophenylalanine -carboxyanhydride (BPA-NCA) monomer and their application for robust co-encapsulation and responsive release of dual anticancer drugs. By employing different poly(ethylene glycol) (PEG) initiators and copolymerizing with varying NCA monomers, linear and star PEG-poly(l-boronophenylalanine) copolymers (PEG-PBPA, star-PEG-PBPA), PEG-poly(l-tyrosine--l-boronophenylalanine) [PEG-P(Tyr--BPA)], PEG-poly(l-lysine--l-boronophenylalanine) [PEG-P(Lys--BPA)], and PEG-poly(β-benzyl-l-aspartate--l-boronophenylalanine) [PEG-P(BLA--BPA)] were obtained with controlled compositions. Read More

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[Prognostic value of TERT mutation in adults with primary glioblastomas. Preliminary results].

Zh Vopr Neirokhir Im N N Burdenko 2022 ;86(3):33-40

Burdenko Neurosurgical Center, Moscow, Russia.

Glioblastoma (GB) is one of the most aggressive primary brain tumors. Analysis of molecular genetic factors affecting prognosis in patients with GB is an important direction of fundamental and clinical researches. There are literature data on the effect of gene mutations, methylation and status on overall survival in patients with GB. Read More

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Next-Generation Anti-Angiogenic Therapies as a Future Prospect for Glioma Immunotherapy; From Bench to Bedside.

Front Immunol 2022 10;13:859633. Epub 2022 Jun 10.

Department of Molecular Imaging, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran.

Glioblastoma (grade IV glioma) is the most aggressive histopathological subtype of glial tumors with inordinate microvascular proliferation as one of its key pathological features. Extensive angiogenesis in the tumor microenvironment supplies oxygen and nutrients to tumoral cells; retains their survival under hypoxic conditions; and induces an immunosuppressive microenvironment. Anti-angiogenesis therapy for high-grade gliomas has long been studied as an adjuvant immunotherapy strategy to overcome tumor growth. Read More

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ACT001 Inhibits TLR4 Signaling by Targeting Co-Receptor MD2 and Attenuates Neuropathic Pain.

Front Immunol 2022 9;13:873054. Epub 2022 Jun 9.

Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China.

Neuropathic pain is a common and challenging neurological disease, which renders an unmet need for safe and effective new therapies. Toll-like receptor 4 (TLR4) expressed on immune cells in the central nervous system arises as a novel target for treating neuropathic pain. In this study, ACT001, an orphan drug currently in clinical trials for the treatment of glioblastoma, was identified as a TLR4 antagonist. Read More

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Gliosarcoma: The Distinct Genomic Alterations Identified by Comprehensive Analysis of Copy Number Variations.

Anal Cell Pathol (Amst) 2022 15;2022:2376288. Epub 2022 Jun 15.

Department of Neurosurgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230036, China.

Gliosarcoma (GSM), a histologic variant of glioblastoma (GBM), carries a poor prognosis with less than one year of median survival. Though GSM is similar with GBM in most clinical and pathological symptoms, GBM has unique molecular and histological features. However, as the rarity of GSM samples, the genetic information of this tumor is still lacking. Read More

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SAA1 Expression as a Potential Prognostic Marker of the Tumor Microenvironment in Glioblastoma.

Front Neurol 2022 10;13:905561. Epub 2022 Jun 10.

Department of Neurosurgery, The Second Hospital of Jilin University, Changchun, China.

Background: Glioblastoma (GBM) is the most common primary brain malignant tumor, and patients with GBM have a poor prognosis. The tumor microenvironment (TME) is connected to tumorigenesis and prognosis. However, the TME-related genes and therapeutic targets in GBM are yet to be identified. Read More

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High Expression Levels of SIGLEC9 Indicate Poor Outcomes of Glioma and Correlate With Immune Cell Infiltration.

Front Oncol 2022 9;12:878849. Epub 2022 Jun 9.

School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China.

Objective: This study aimed to investigate the diagnostic value and underlying mechanisms of sialic acid-binding Ig-like lectin 9 (SIGLEC9) in gliomas.

Patients And Methods: The Cancer Genome Atlas (TCGA) and the Chinese Glioma Genome Atlas (CGGA) databases were used to analyze the association of expression levels with tumor stages and survival probability. Immunohistochemical staining of SIGLEC9 and survival analysis were performed in 177 glioma patients. Read More

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Novel Brain-Stiffness-Mimicking Matrix Gel Enables Comprehensive Invasion Analysis of 3D Cultured GBM Cells.

Front Mol Biosci 2022 9;9:885806. Epub 2022 Jun 9.

Brain Research Institute, Taihe Hospital, Hubei University of Medicine, Shiyan, China.

Glioblastoma (GBM) is the most common malignant primary brain tumor in adults, which is fast growing and tends to invade surrounding normal brain tissues. Uncovering the molecular and cellular mechanisms of GBM high invasion potential is of great importance for the treatment and prognostic prediction. However, the commonly used two-dimensional (2D) cell culture and analysis system suffers from lack of the heterogeneity and property of brain tissues. Read More

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Progesterone limits the tumor-promoting effects of the beta-subunit of human chorionic gonadotropin via non-nuclear receptors.

iScience 2022 Jul 3;25(7):104527. Epub 2022 Jun 3.

Immunoendocrinology Lab, National Institute of Immunology, New Delhi, Delhi 110067, India.

The post-menopausal state in women is associated with increased cancer incidence, the reasons for which remain obscure. Curiously, increased circulating levels of beta-hCG (human chorionic gonadotropin) (a hormonal subunit linked with tumors of several lineages) are also often observed post-menopause. This study describes a previously unidentified interplay between beta-hCG and progesterone in tumorigenesis. Read More

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Abnormally Expressed Ferroptosis-Associated FANCD2 in Mediating the Temozolomide Resistance and Immune Response in Glioblastoma.

Front Pharmacol 2022 8;13:921963. Epub 2022 Jun 8.

Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.

Ferroptosis-related genes (FRGs) have been identified as potential targets involved in oncogenesis and cancer therapeutic response. Nevertheless, the specific roles and underlying mechanisms of FRGs in GBM and temozolomide (TMZ) resistance remain unclear. Through comprehensive bioinformatics, we found that ferroptosis-related Fanconi anemia complementation group D2 (FANCD2) was significantly up-regulated in GBM tissues, and the high expression level of FANCD2 was related to the poor prognosis in primary and recurrent GBM patients. Read More

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Dendrimer-Functionalized Nanodiamonds as Safe and Efficient Drug Carriers for Cancer Therapy: Nucleus Penetrating Nanoparticles.

ACS Appl Bio Mater 2022 Jun 27. Epub 2022 Jun 27.

Materials Chemistry Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Delhi-NCR 201314, India.

Nanodiamonds (NDs) are increasingly being assessed as potential candidates for drug delivery in cancer cells and they hold great promise in overcoming the side effects of traditional chemotherapeutics. In the current work, carboxylic acid functionalized nanodiamonds (ND-COOH) were covalently modified with poly(amidoamine) dendrimer (PAMAM) to form amine-terminated nanodiamonds (NP). Unlike ND-COOH, the chemically modified nanodiamond platform NP revealed a pH-independent aqueous dispersion stability, enhancing its potential as an effective carrier. Read More

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Planning System for the Optimization of Electric Field Delivery using Implanted Electrodes for Brain Tumor Control.

Med Phys 2022 Jun 27. Epub 2022 Jun 27.

Department of Medical Biophysics, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada.

Background: The use of non-ionizing electric fields from low intensity voltage sources (<10 V) to control malignant tumor growth is showing increasing potential as a cancer treatment modality. A method of applying these low intensity electric fields using multiple implanted electrodes within or adjacent to tumor volumes has been termed as intratumoral modulation therapy (IMT).

Purpose: This study explores advancements in the previously established IMT optimization algorithm, and the development of a custom treatment planning system for patient specific IMT. Read More

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Initial preclinical evaluation of 68Ga-DOTA-(Ser)3-LTVSPWY peptide as a PET radiotracer for glioblastoma targeting and imaging.

Nucl Med Commun 2022 Jun 27. Epub 2022 Jun 27.

Department of Radiopharmacy, Faculty of Pharmacy, Mazandaran University of Medical Sciences.

Purpose: Imaging of glioblastoma multiform (GBM) tumor using 68-Galium-1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraaceticacid-Ser-Ser-Ser-Leu-Thr-Val-Ser-Pro-Trp-Tyr (68Ga-DOTA-(Ser)3-LTVSPWY) as a PET radiotracer for HER2 receptor due to fact that this receptor plays a pivotal role in the tumorigenesis and tumor progression in a wide range of cancer.

Methods: 68Ga-DOTA-(Ser)3-LTVSPWY was produced with high radiochemical purity. The affinity and specificity of this radiotracer toward HER2 receptor on the surface of glioma glioblastoma (U-87 MG) cell line were evaluated. Read More

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Comparison of tumor immune environment between newly diagnosed and recurrent glioblastoma including matched patients.

J Neurooncol 2022 Jun 26. Epub 2022 Jun 26.

Department of Radiation Oncology, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198-7521, USA.

Purpose: Glioblastoma (GBM) is the most lethal primary brain tumor in adult patients. The disease progression, response to chemotherapy and radiotherapy at initial diagnosis, and prognosis are profoundly associated with the tumor microenvironment, especially the features of tumor-infiltrating immune cells (TII). Recurrent GBM is even more challenging to manage. Read More

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Sensitization of glioblastoma cancer cells to radiotherapy and magnetic hyperthermia by targeted temozolomide-loaded magnetite tri-block copolymer nanoparticles as a nanotheranostic agent.

Life Sci 2022 Jun 24:120729. Epub 2022 Jun 24.

Department of Medical Physics, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.

Aims: Recently, the development of new strategies in the treatment and diagnosis of cancer cells such as thermo-radiation-sensitizer and theranostic agents have received a great deal of attention. In this work, folic acid-conjugated temozolomide-loaded [email protected] nanoparticles (TMZ-MNP-FA NPs) were proposed for use as magnetic resonance imaging (MRI) contrast agents and to enhance the cytotoxic effects of hyperthermia and radiotherapy.

Main Methods: Nanoparticles were synthesized by the Nano-precipitation method and their characteristics were determined by dynamic light scattering (DLS), scanning electron microscopy (SEM) and X-ray powder diffraction (XRD). Read More

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Timing of radiotherapy in glioblastoma based on IMRT and STUPP chemo-radiation: may be no need to rush.

Clin Transl Oncol 2022 Jun 26. Epub 2022 Jun 26.

Department of Radiotherapy, Cancer Center, The First Affiliated Hospital of Fujian Medical University, No.20 Chazhong Road, Taijiang District, Fuzhou, 350005, Fujian Province, China.

Objective: To investigate the effect of surgery to radiotherapy interval (SRI) on the prognosis of patients with isocitrate dehydrogenase (IDH) wild-type glioblastoma.

Methods: Retrospective analysis of the relationship between SRI and prognosis of patients with IDH wild-type glioblastoma who received postoperative intensity modulated radiotherapy (IMRT) in our center from July 2013 to July 2019. The patients were divided into SRI ≤ 42 days (regular group) and SRI > 42 days (delay group). Read More

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Temozolomide increases heat shock proteins in extracellular vesicles released from glioblastoma cells.

Mol Biol Rep 2022 Jun 25. Epub 2022 Jun 25.

Department of Molecular Biology and Genetics, Faculty of Science, Istanbul University, Vezneciler, 34134, Istanbul, Turkey.

Background: Glioblastoma (GBM) is the most malignant and the fastest-progressing type of primary brain tumours. Temozolomide (TMZ) is a chemotherapeutic drug for the treatment of GBM. Extracellular vesicles (EVs) have been recently confirmed to have a substantial role in the GBM, and their contents released from GBM cells have been considered a target for treatment. Read More

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Spatiotemporal analysis of glioma heterogeneity reveals COL1A1 as an actionable target to disrupt tumor progression.

Nat Commun 2022 Jun 24;13(1):3606. Epub 2022 Jun 24.

Department of Neurosurgery, University of Michigan Medical School, Ann Arbor, MI, 48109, USA.

Intra-tumoral heterogeneity is a hallmark of glioblastoma that challenges treatment efficacy. However, the mechanisms that set up tumor heterogeneity and tumor cell migration remain poorly understood. Herein, we present a comprehensive spatiotemporal study that aligns distinctive intra-tumoral histopathological structures, oncostreams, with dynamic properties and a specific, actionable, spatial transcriptomic signature. Read More

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Metal-Free Radical Dendrimers as MRI Contrast Agents for Glioblastoma Diagnosis: and Approaches.

Biomacromolecules 2022 Jun 24. Epub 2022 Jun 24.

Institut de Ciència de Materials de Barcelona, ICMAB-CSIC; Campus UAB, 08193 Bellaterra, Spain.

Simultaneously being a nonradiative and noninvasive technique makes magnetic resonance imaging (MRI) one of the highly required imaging approaches for the early diagnosis and follow-up of tumors, specifically for brain cancer. Paramagnetic gadolinium (Gd)-based contrast agents (CAs) are the most widely used ones in brain MRI acquisitions with special interest when assessing blood-brain barrier (BBB) integrity, a characteristic of high-grade tumors. However, alternatives to Gd-based contrast agents (CAs) are highly required to overcome their established toxicity. Read More

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Mebendazole plus lomustine or temozolomide in patients with recurrent glioblastoma: A randomised open-label phase II trial.

EClinicalMedicine 2022 Jul 27;49:101449. Epub 2022 May 27.

Department of Radiation Oncology, Tata Memorial Center, Mumbai, India.

Background: Recurrent glioblastoma (GBM) has dismal outcomes and limited treatment options. Mebendazole (MBZ) has activity in glioma both and , and is well tolerated in combination with lomustine (CCNU) and temozolomide (TMZ). In this study, we sought to determine whether the addition of MBZ to CCNU or TMZ would improve overall survival (OS) in recurrent GBM. Read More

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Drug Delivery Systems in the Development of Novel Strategies for Glioblastoma Treatment.

Pharmaceutics 2022 Jun 1;14(6). Epub 2022 Jun 1.

Advanced Dynamic Cell Culture Systems Laboratory, Department of Chemical Engineering and Biotechnology Engineering, Faculty of Engineering, Université de Sherbrooke, 2500 Boul. Université, Sherbrooke, QC J1K 2R1, Canada.

Glioblastoma multiforme (GBM) is a grade IV glioma considered the most fatal cancer of the central nervous system (CNS), with less than a 5% survival rate after five years. The tumor heterogeneity, the high infiltrative behavior of its cells, and the blood-brain barrier (BBB) that limits the access of therapeutic drugs to the brain are the main reasons hampering the current standard treatment efficiency. Following the tumor resection, the infiltrative remaining GBM cells, which are resistant to chemotherapy and radiotherapy, can further invade the surrounding brain parenchyma. Read More

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The pH-Responsive Liposomes-The Effect of PEGylation on Release Kinetics and Cellular Uptake in Glioblastoma Cells.

Pharmaceutics 2022 May 25;14(6). Epub 2022 May 25.

Drug Transport and Delivery Research Group, Department of Pharmacy, UiT The Arctic University of Norway, 9019 Tromsø, Norway.

Nanomedicine has been, to a certain degree, a success story in the development of superior anticancer therapies. However, there are tumors that remain a huge challenge for nanoformulations, for instance, brain tumors such as glioblastoma, the most common and aggressive brain tumor. To utilize the fact that such tumors are characterized by an acidic extracellular environment, we selected pH-responsive liposomes as a potential drug delivery system for superior delivery to GBM. Read More

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Imaging of Clear Cell Renal Carcinoma with Immune Checkpoint Targeting Aptamer-Based Probe.

Pharmaceuticals (Basel) 2022 Jun 1;15(6). Epub 2022 Jun 1.

Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7a, 30-387 Krakow, Poland.

Immune checkpoint targeting immunotherapy has revolutionized the treatment of certain cancers in the recent years. Determination of the status of immune checkpoint expression in particular cancers may assist decision making. Here, we describe the development of a single-stranded aptamer-based molecular probe specifically recognizing human PD-L1. Read More

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Phytochemical Study and Antiglioblastoma Activity Assessment of (Forssk.) Schweinf. ex Sprenger var. hadiensis Stems.

Molecules 2022 Jun 14;27(12). Epub 2022 Jun 14.

Center for Research in Biosciences & Health Technologies (CBIOS), Universidade Lusófona de Humanidades e Tecnologias, Campo Grande 376, 1749-024 Lisbon, Portugal.

Glioblastoma (GB) is the most malignant form of primary astrocytoma, accounting for more than 60% of all brain tumors in adults. Nowadays, due to the development of multidrug resistance causing relapses to the current treatments and the development of severe side effects resulting in reduced survival rates, new therapeutic approaches are needed. The genus belongs to the Lamiaceae family and is known to be rich in abietane-type diterpenes, which possess antitumor activity. Read More

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Prognostic Values of Combined Ratios of White Blood Cells in Glioblastoma: A Retrospective Study.

J Clin Med 2022 Jun 13;11(12). Epub 2022 Jun 13.

Department of Applied and Clinical Physiology, Collegium Medicum University of Zielona Gora, 28 Zyty Str., 65-417 Zielona Gora, Poland.

In some malignant tumours, the changes in neutrophil counts in relation to other blood cells are connected with unfavourable prognosis. Nevertheless, the prognostic value of the combinations of the haematological components in glioblastoma (GBM) remains under dispute. The clinical significance of the neutrophil-to-lymphocyte ratio (NLR), systemic immune inflammation index (SII), and systemic inflammation response index (SIRI) was investigated in our study. Read More

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Correlation of Tumor Pathology with Fluorescein Uptake and MRI Contrast-Enhancement in Stereotactic Biopsies.

J Clin Med 2022 Jun 10;11(12). Epub 2022 Jun 10.

Department of Neurosurgery, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, and Humboldt-Universität zu Berlin, and Berlin Institute of Health, 13353 Berlin, Germany.

The utilization of fluorescein-guided biopsies has recently been discussed to improve and expedite operative techniques in the detection of tumor-positive tissue, as well as to avoid making sampling errors. In this study, we aimed to report our experience with fluorescein-guided biopsies and elucidate distribution patterns in different histopathological diagnoses in order to develop strategies to increase the efficiency and accuracy of this technique. We report on 45 fluorescence-guided stereotactic biopsies in 44 patients (15 female, 29 male) at our institution from March 2016 to March 2021, including 25 frame-based stereotactic biopsies and 20 frameless image-guided biopsies using VarioGuide. Read More

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