Clinical Studies

Deep Intracerebral Hemorrhage Evacuation with Vycor Tubular Retractor: A Multi-center Case Series.

Authors: Lauren Raelly-Muze, Thomas Tyler Patterson, Anthony Diaz, Ketan Bulsara, Justin Mascitelli Publication: Neurosurgical Research September 2025 Click here to view article  

Targeted tumor resection to reestablish cerebrospinal fluid flow in the setting of a pediatric third ventricle glioma with obstructive hydrocephalus.

Authors: Avi Stern, Ankita Jain , Alan Stein, Phillip B. Storm, Jeremy Rosenblum, Jared M. Pisapia Publication: Surgical Neurology International August 2025 Click here to view article  

Tubular retractors in neuro-oncological surgery: a systematic review and meta-analysis.

Authors: Amir Rafati Fard, Owen Hibberd, Isaac Akinduro, Zainab Bhatti, Kieran J. Smith, Reece Patel, Sejal Karmarkar, Oliver D. Mowforth, Ciaran S. Hill Publication: Neurosurgical Review June 2025 Click here to view article  

An update on current devices for the port technique A systematic review.

Authors: Sabrina Smith, Saniya Mediratta, Jennifer Knight, Brihitejas Patel, Dimitris Paraskevopoulos Publication: Neurosurgical Review April 2025 Click here to view article  

Utility of Surgical Simulation for Tubular Retractor Surgery Using Three-Dimensional Printed Intraventricular Tumor Models: Case Series

Authors: Ryo Omae, Ryu Kimura, Yoshihiro Otani, Jun Haruma, Tomoya Saijo, Juntaro Fujita, Shohei Nishigaki, Ryosuke Ikemachi, Shuichiro Hirano, Joji Ishida, Kentaro Fujii, Takao Yasuhara, Shota Tanaka Publication: World Neurosurgery March 2025 Click here to view article  

Infradentate Approach to the Fourth Ventricle with Tubular Retraction System for Medulloblastoma: Feasibility of a Minimally Invasive Technique to Avoid Anatomical Complications in a Pediatric Patient

Authors: J. Javier Cuéllar-Hernández, Omar R. Ortega-Ruiz, Luis Alejandro Pérez-Ruano, Paulo Tabera-Tarello, Javier Terrazo-Lluch Publication: Pediatric Neurosurgery March 2025 Click here to view article  

Diffusion changes in minimally invasive parafascicular approach

Authors: Mariam Awan, Aya Elshalakany, Dimitrios Kalaitzoglou, Nida Kalyal, Siddharth Sinha, Andrea Perera, Oliver Wroe Wright, Mathew J. Gallagher, Daniel Richardson, Ali Elhag, Francesco Marchi, Ahmed Abougamil, Melissa Silva, Anna Oviedova, Sabina Patel, Ana Mirallave‑Pescador, Alba Diaz‑Baamonde, Cristina Bleil, Bassel Zebian, Richard Gullan, Keyoumars Ashkan, Francesco Vergani, Ranjeev Bhangoo, José Pedro Lavrador Publication: Neurosurgical Review December 2024 Click here to view article  

Exoscopic Transcortical-Transventricular Approach With Tubular Retractor for Chronic Encapsulated Expanding Hematoma in the Thalamus

Authors: Katsuya Ueno, Akina Iwasaki, Takuma Maeda, Daisuke Tanikawa, Aoto Shibata, Masahito Kobayashi, Hiroki Kurita Publication: Cureus October 2024 Click here to view the article  

Evaluating the impact of tubular retractors in glioma surgery: A systematic review and meta-analysis

Authors: Zachary Taylor, Anjali Gupta, Neel H. Mehta, Seyedamirhossein Pishva, Nithin Gupta , Nikki M. Barrington, Alon Kashanian, Randy S. D’Amico Publication: Clinical Neurology and Neurosurgery August 2024 Click here to view the article  

Utilizing tubular retractors in colloid cyst resection: A single surgeon experience

Authors: Muhammet Enes Gurses, Victor M. Lu, Neslihan Nisa Gecici, Khushi Hemendra Shah, Elif Gökalp, Malek Bashti, Sameah Haider, Ricardo J. Komotar Publication: Surgical Neurology International May 2024 Click here to view the article  

Minimally invasive craniotomy for putaminal hemorrhage using a tubular retractor: A technical note

Authors: Takuto Kuwajima, Mikiya Beppu, Shinichi Yoshimura. Publication: Surgical Neurology International May 2024 Click here to view the article  

Cylinder tumor surgery in pediatric low‑grade gliomas

Authors: Sebastian Gaston Jaimovich, Kazuhito Takeuchi, Victoria Tcherbbis Testa, Eriko Okumura, Roberto Jaimovich, Giuseppe Cinalli. Publication: Child’s Nervous System April 2024 Click here to view the article  

Minimally invasive resection of intracranial lesions using tubular retractors: A single surgeon series

Authors: Muhammet Enes Gurses, Elif Gokalp, Neslihan Nisa Gecici, Victor M. Lu, Khushi Hemendra Shah, Eric Singh, Angela Luo, Ashish H. Shah, Michael E. Ivan, Ricardo J. Komotar. Publication: Clinical Neurology and Neurosurgery April 2024 Click here to view the article  

A comparison of brain retraction mechanisms using finite element analysis and the effects of regionally heterogeneous material properties

Authors: Emma Grifths, Jayaratnam Jayamohan and Silvia Budday Publication: Biomechanics and Modeling in Mechanobiology February 2024 Click here to view the article  

Impact of Preoperative Mapping and Intraoperative Neuromonitoring in Minimally Invasive Parafascicular Surgery for Deep-Seated Lesions

Authors: Siddharth Sinha, Nida Kalyal, Mathew J. Gallagher, Daniel Richardson, Dimitrios Kalaitzoglou, Ahmed Abougamil, Melissa Silva, Anna Oviedova, Sabina Patel, Ana Mirallave-Pescador, Cristina Bleil, Bassel Zebian, Richard Gullan, Keyoumars Ashkan, Francesco Vergani, Ranjeev Bhangoo, JoséPedro Lavrador. Publication: World Neurosurgery January 2024 Click here to view the article  

Robotically facilitated parafasicular microsurgery to a brain arteriovenous malformation in a paediatric patient

Authors: Ahmed Abougamil, Harishchandra L Srinivasan, Carlos E. Fiandeiro, Robin D C Kumar, Steven Bibby, Thomas C. Booth, Harutomo Hasegawa and Daniel C. Walsh Publication: British Journal of Neurosurgery August 2023 Click here to view the article  

Standardization of Strategies to Perform a Parafascicular Tubular Approach for the Resection of Brain Tumors in Eloquent Areas Guidance: The Minefield Paradigm

Authors: Nadin J. Abdala-Vargas Giuseppe E. Umana, Javier G. Patiño-Gomez , Edgar Ordoñez-Rubiano, Hernando A. Cifuentes-Lobelo, Paolo Palmisciano, Gianluca Ferini, Anna Viola, Valentina Zagardo, Daniel Casanova-Martínez, Ottavio S. Tomasi, Alvaro Campero and Matias Baldoncini Publication: Operative Brain Sciences March 2023 Click here to view the article  

Minimally Invasive Surgery of Deep-Seated Brain Lesions Using Tubular Retractors and Navigated Transcranial Magnetic Stimulation-Based Diffusion Tensor Imaging Tractography Guidance: The Minefield Paradigm

Authors: Filippo Flavio Angileri, Giovanni Raffa, Giuseppina Marzano, Antonino Germano, Antonello Curcio, Francesca Granata Publication: Operative Neurosurgery February 2023 Click here to view the article  

Surgical cytoreduction of deep-seated high-grade glioma through tubular retractor

Authors: Sabastian Hajtovic, James Sun, Jasjit S. Multani, Linda L. Herrmann, Hannah Britton, Jose Gautreaux, Lea Tortolero, Gillian Harrison, John G. Golfinos, Timothy M. Shepherd, Omar Tanweer, and Dimitris G. Placantonakis Publication: Journal of Neurosurgery November 2022 Click here to view the article  

Minimally invasive image‑guided endoscopic evacuation of intracerebral haemorrhage: How I Do it

Authors: Tim Jonas Hallenberger, Raphael Guzman Publication: Acta Neurochirurgica August 2022 Click here to view the article  

Intraventricular Choroid Plexus Cavernoma Resection using Tubular Retraction System and Exoscope Visualization: A Technical Case Report

Authors: Li, B., Kim, M.G., Dominguez, J., Feldstein, E., Kleinman, G., Hanft Publication: Operative Neurosurgery January 2022 Click here to view the article  

Combined Endoscopic Transsphenoidal and Tubular Retractor-Assisted Transventricular Approach for Giant Pituitary Adenomas (GPA)

Authors: Guinto-Nishimura GY, Caballero-Delgado S, Eguiluz-Meléndez AG, Ortega-Porcavo, L.A., Valencia-Ramos, C., Aragon-Arreoia, J.F., Portocarrero, L., Sangrador-Deitos, M.V., Gómez-Amador, J.L Publication: World Neurosurgery November 2021 Click here to view the article  

The use of exoscope combined with tubular retractor system for minimally invasive transsulcal resection of a ventricular atrium atypical choroid plexus papilloma: Three-dimensional operative video

Authors: Cuellar-Hernandez, J.J., Lopez-Gonzalez, M.A., Olivas-Campos, J.R., Tabera-Tarello, P.M., Seañez-Prieto, C., Eastin, T.M., Song Publication: Surgical Neurology International September 2021 Click here to view the article  

Microsurgical endoportal MRI/US-navigated approach for the resection of large intraventricular tumours: a 20-consecutive patients case series

Authors: Jody Filippo Capitanio, Carmine Antonio Donofrio, Pietro Panni, Lina Raffaella Barzaghi, Michele Bailo, Filippo Gagliardi and Pietro Mortini Publication: British Journal of Neurosurgery August 2021 Click here to view the article  

Minimally invasive surgery with tubular retractor system for deep-seated or intraventricular brain tumors: Report of 13 cases and technique description

Authors: Alberto Valarezo-Chuchuca, Leah Morejo ́n-Hasing, Xavier Wong-Achi, Maria Egas Publication: Interdisciplinary Neurosurgery: Advanced Techniques and Case Management, May 2021 Click here to view the article  

Endoscope-Assisted Neuroportal Transcerebellar Approach to the Fourth Ventricle: An Anatomical Study

Authors: Martina Piloni, Filippo Galiardi, Michele Bailo, Lina R Barzaghi, Anthony J Caputy, Pietro Mortini Publication: Journal of Neurological Surgery, May 2021 Click here to view the article  

Epstein-Barr Virus-Positive Primary Central Nervous System Lymphoma in a 40-Year-Old Immunocompetent Patient

Authors: Sabastian Hajtovic, Cynthia Liu, Catherine M. Diefenbach, Dimitris G. Placantonakis Publication: Cureus, January 2021 Click here to view the article  

Transcortical Approach to Deep-Seated Intraventricular and Intra-axial Tumors using a Tubular Retractor System: A Technical Note and Review of the Literature

Authors: Mohamed Okasha, Georgia Ineson, Jonathan Pesic-Smith, Surash Surash. Publication: Journal of Neurological Surgery, December 2020 Click here to view the article  

Minimally Invasive Surgical Outcomes for Deep-Seated Brain Lesions Treated with Different Tubular Retraction Systems: A Systematic Review and Meta-Analysis

Authors: Lina Marenco-Hillembrand, Calder Prevatt, Paola Suarez-Meade, Henry Ruiz-Garcia, Alfredo Quinones-Hinojosa, Kaisorn L. Chaichana Publication: World Neurosurgery November 2020 Click here to view the article  

Transcortical endoportal subchoroidal endoscope-assisted approach to the third ventricle: from virtual reality to anatomical laboratory

Authors: Carmine A Donofrio, Lucia Riccio, Jody F Capitanio, Aalap Herur-Raman, Pietro Panni, Filippo Gagliardi, Anthony J Caputy, Pietro Mortini Publication: Journal of Neurosurgical Sciences September 2020 Click here to view the article  

Intracranial Tubular Retractor Systems: A Comparison and Review of the Literature of the BrainPath, Vycor, and METRx Tubular Retractors in the Management of Deep Brain Lesions.

Authors: Nikolas Echeverry, Samuel Mansour, Gerard MacKinnon, Jude Jaraki, Stephen Shapiro, Brian Snelling Publication: World Neurosurgery July 2020 Click here to view the article  

Management of large intraventricular meningiomas with minimally invasive port technique: a three-case series

Authors: Ali O. Jamshidi, Andre Beer-Furlan, Douglas A. Hardesty, Leo F. S. Ditzel Filho, Luciano M. Prevedello & Daniel M. Prevedello Publication: Neurosurgical Review, October 2020 Click here to view the article  

Minimally invasive resection of intracranial lesions using tubular retractors: a large, multi‑surgeon, multi‑institutional series

Authors: Daniel G. Eichberg, Long Di, Ashish H. Shah, Evan M. Luther, Christina Jackson, Lina Marenco‑Hillembrand, Kaisorn L. Chaichana, Michael E. Ivan, Robert M. Starke, Ricardo J. Komotar from University of Miami Miller School of Medicine, Johns Hopkins University School of Medicine, Mayo Clinic, Sylvester Comprehensive Cancer Center, University of Miami Hospital Publication: Journal of Neuro-Oncology, June 2020 Click here to view the article  

Use of Tubular Retractors for Minimally Invasive Resection of Deep-Seated Cavernomas

Authors: Daniel G Eichberg, Long Di, Ashish H Shah, Michael E Ivan, Ricardo J Komotar, Robert M Starke Publication: Operative Neurosurgery. Published June 1, 2020 Click here to view the article  

Use of Vycor Tubular Retractors in the Management of Deep Brain Lesions: A Review of Current Studies

Authors: Stephen Z. Shapiro, Kenneth A. Sabacinski, Samuel A. Mansour, Nikolas B. Echeverry, Sumedh S. Shah, Alan A. Stein, Brian M. Snelling Publication: World Neurosurgery, January 2020 Click here to view the article  

Transparent Tubular Retractor in Cranial Surgery: A Retrospective Analysis

Authors: Shashivadhanan, S. Department of Neurosurgery, Command Hospital Air Force, Bengaluru, Karnataka, India Publication: Indian Journal of Neurosurgery, December 2019 Click here to view the article  

Use of Tubular Retractor for Resection of Colloid Cysts: Single Surgeon Experience and Review of the Literature

Authors: Eichberg, D. G., Buttrick, S. S., Sharaf, J. M., Snelling, B. M., Shah, A. H., Ivan, M. E., & Komotar, R. J. Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida Publication: Operative Neurosurgery, May 2019 Click here to view the article  

Infradentate Approach to the Fourth Ventricle

Authors: Ali O Jamshidi, MD, Blake Priddy, BS, Andre Beer-Furlan, MD, Daniel M Prevedello, MD Publication: Operative Neurosurgery, Volume 16, Issue 2, February 2019 Click here to view the article  

Contemporary Surgical Management of Deep-Seated Metastatic Brain Tumors Using Minimally Invasive Approaches

Authors: Marenco-Hillembrand, L., Avarado-Estrada, K, Chaichana, K.L. Department of Neurosurgery, Mayo Clinic, Jacksonville, FL Publication: Front Oncol, November 2018 Click here to view the article  

Use of Tubular Retractor for Resection of Deep-Seated Cerebral Tumors and Colloid Cysts: Single Surgeon Experience and Review of the Literature

Authors: Daniel G. Eichberg, MD, Simon Buttrick, MD, G Damian Brusko, BS, Michael Ivan, MD, Robert M. Starke, MD, Ricardo J. Komotar, MD of the Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA Publication: World Neurosurgery, April 2018 Click here to view the article  

Comparison of endoscopic- versus microscopic-assisted resection of deep-seated intracranial lesions using a minimally invasive port retractor system

Authors: Christopher Hong BA, Daniel M. Prevedello MD, J Bradley Elder MD; The Ohio State University Wexner Medical Center Department of Neurological Surgery Publication: Journal of Neurosurgery March 2016 Click here to view the article  

Use of a Minimally Invasive Retractor System for Retrieval of Intracranial Fragments in Wartime Trauma

Authors: George N. Rymarczuk, MD, Laurence Davidson, MD, Meryl A. Severson, MD, Rocco A. Armonda, MD Publication: World Neurosurgery, May 2015 Click here to view the article  

Endoscopic hematoma evacuation in patients with spontaneous supratentorial intracerebral hemorrhage

Authors: Wei-Hsin Wang, Yi-Chieh Hung, Sanford P.C. Hsu, Chun-Fu Lin, Hsin-Hung Chen, Yang-Hsin Shih, Cheng-Chia Lee Taipei Veterans General Hospital, and National Yang-Ming University School of Medicine. Taipei, Taiwan Publication: Journal of the Chinese Medical Association, February 2015 Volume 78, Issue 2, Pages 101–107 Click here to view the article  

A 3D endoscopic transtubular transcallosal approach to the third ventricle

Authors: Alireza Shoakazemi, Alexander I. Evins, Justin C. Burrell, Philip E. Stieg, and Antonio Bernardo Publication: Journal of Neurosurgery, March 2015 Vol. 122 No. 3: Pages 564-573 Click here to view the article  

A Purely Endoscopic and Simultaneous Transsphenoidal and Transcranial Keyhole Approach for Giant Pituitary Adenoma Resection: A Technical Case Report

Authors: Takeuchi, K., Nagatani, T., Watanabe, T., Okumura, E., Sato, Y., Wakabayashi, T. Dept of Neurosurgery, Nagoya Univ. Graduate School of Medicine, Nagoya, Japan; Dept. of Neurosurgery, Japanese Red Cross Nagoya Daini Hospital, Nagoya, Japan Publication: NMC Case Report Journal, January 2015 Click here to view the article  

Rigid endoscopic resection of deep-seated or intraventricular brain tumors

Authors: Yukinori Akiyama, Masahiko Wanibuchi, Takeshi Mikami, Yoshifumi Horita, Katsuya Komatsu, Kengo Suzuki, Shunya Otaki, Nobuhiro Mikuni Department of Neurosurgery, Sapporo Medical University, School of Medicine, Hokkaido, Japan Publication: Neurological Research, 2015 Vol. 37 No. 3: Pages 278-282 Click here to view the article  

Minitubular Transcortical Microsurgical Approach for Gross Total Resection of Third Ventricular Colloid Cysts: Technique and Assessment

Author: Aaron A. Cohen-Gadol, M.D., M.Sc. Goodman Campbell Brain and Spine, Indiana University Department of Neurological Surgery, Indianapolis Publication: World Neurosurgery, January 2013 Click here to view the article  

Usage of a Minimally Invasive Tubular Retraction System for Deep-Seated Tumors in Pediatric Patient

Authors: Pablo Recinos, M.D., of the Cleveland Clinic and George Jallo, M.D., of Johns Hopkins University Publication: Journal of Neurosurgery: Pediatrics, May 2011 Click here to view the article  

Minimally Invasive Trans-Portal Resection of Deep Intracranial Lesions

Authors: S.M Raza, P.F. Recinos, J. Avondano, H. Adams, G. I. Jallo and A. Quinones- Hinojosa Publication: Minimally Invasive Neurosurgery, February 2011 Click here to view the article  

Use of Transparent Plastic Tubular Retractor in Surgery for Deep Brain Lesions: A Case Series

Author: Konstantin V. Slavin, MD et al of Dept of Neurosurgery, University of Illinois at Chicago Publication: Surgical Technology International, April 2010 Click here to view the article  

Endoscopic Transcortical Tubular-Based Resection of a Third Ventricle Colloid Cyst: 2-Dimensional Operative Video

Authors: Ilaria Bove, Jacopo Berardinelli, Teresa Somma, Domenico Solari, Felice Esposito, Luigi Maria Cavallo Publication: World Neurosurgery November 2025 Click here to view the article  

Resection of an Intraventricular Metastatic Tumor with Minimally Invasive Port Technique: 2-Dimensional Operative Video

Authors: Ricardo H. Menendez, Joaquin Chuang, Daniel D’Osvaldo, Karina Breitburd, Pablo Rubino Publication: World Neurosurgery December 2023 Click here to view the article  

Surgical advances in the management of brain metastases

Authors: Ng, P.R., Choi, B.D., Aghi, M.K., Nahed, B.V Publication: Neuro Oncology Advances November 2021 Click here to view the article  

Intraparenchymal hemorrhage evacuation using the Vycor retractor system

Authors: Lydia Kaoutzani, Tyler Sparks, Scott Rahimi Publication: poster presented at the CNS annual meeting October 2021 Click here to view the article  

Risks of Endoscopic Temporal Ventriculocisternostomy for Isolated Lateral Ventricle: Anatomic Surgical Nuances

Authors: Takatoshi Hasegawa, Toshihiro Ogiwara, Alhusain Nagm, Tetsuya Goto, Tatsuro Aoyama, Kazuhiro Hongo. From the Department of Neurosurgery, Shinshu University School of Medicine, Matsumoto, Japan; and Department of Neurosurgery, Al-Azhar University Faculty of Medicine, Nasr, Cairo, Egypt Publication: World Neurosurgery, February 2018 Click here to view the article  

A Transtubular Anterior Interhemispheric Approach

Authors: Alexander I. Evins, Philip E. Stieg, Antonio Bernardo of the Department of Neurosurgery, Weill Cornell Medicine, New York, New York Publication: Journal of Neurological Surgery, March 2017 Click here to view the article  

Frameless Stereotactic Insertion of Viewsite Brain Access System with Microscope-Mounted Tracking Device for Resection of Deep Brain Lesions: Technical Report

Authors: Tim White, Shamik Chakraborty, Rohan Hall, Andrew A Fanous, John Boockvar and David J. Langer, of Hofstra Northwell School of Medicine Publication: Cureus, February 2017 Click here to view the article  

Fully Endoscopic Freehand Evacuation of Spontaneous Supratentorial Intraparenchymal Hemorrhage

Authors: Filippo Flavio Angileri, Felice Esposito, Stefano Maria Priola, Giovanni Raffa, Daniele Marino, Rosaria Viola Abbritti, Maria Giusa, Antonino Germano`, Francesco Tomasello Division of Neurosurgery, Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Messina, Italy Publication: World Neurosurgery October 2016 Click here to view the article  

Endoscope-assisted resection of cavernous angioma at the foramen of Monro: a case report

Authors: Yuji Matsumoto, Kazuhiko Kurozumi, Yousuke Shimazu, Tomotsuga Ichikawa and Isao Date of the Okayama University Graduate School of Medicine, Japan Publication: SpringerOpen, October 2016 Click here to view the article  

Single-Port Endoscopic Technique for the Treatment of Primary Intracerebral Hemorrhage

Authors: Juan Antonio Ponce-Gomez M.D. Luis Alverto Ortega-Porcayo M.D. Victor Alcocer-Barradas M.D. Juan Barges-Coll M.D. Juan Luis Gomez Amador M.D. of Department of Neurological Surgery, National Institute of Neurology and Neurosurgery “Manuel Velasco Suarez” Mexico City, Mexico November 2015 Click here to view the article  

Exoscope-Assisted Surgery for Deep-Seated Intraparenchymal Tumor

Authors: Hideo Osada, Kimihiro Nagatani, Terushige Toyooka, Kojiro Wada, Naoki Otani, Arata Tomiyama, Satoshi Tomura, Hideaki Ueno, Kentaro Mori of the Department of Neurosurgery, National Defense Medical College and Department of Neurosurgery, Kuki General Hospital Publication: Japanese Journal of Neurosurgery, 2015, Vol. 24 No. 9 p. 623-631 Click here to view the article  

Microsurgical resection for lateral ventricular meningiomas with neuronavigation and tubular retractor system

Authors: Xiong Tao, Wanggou Siyi, Chen Xiaoyu, Peng Zefeng, Liu Qing, Yuan Xianrui, Li Xuejun, Department of Neurosurgery, Xiangya Hospital, Central South University; Changsha, China Publication: Chinese Journal of Neurosurgery, April 2015 Volume 31, No.4 Click here to view the article  

Vycor Viewsite TC: Endoscope Intraparenchimal Brain Tumor Resection with Image Guidance, (Case 2)

Author: Daniel Prevedello, M.D., Director of the Minimally Invasive Cranial Surgery Program at the Ohio State University Click here to view the article  

Vycor Viewsite TC: Endoscope-guided Intraparenchimal Brain Tumor Resection, (Case 1)

Author: Daniel Prevedello, M.D., Director of the Minimally Invasive Cranial Surgery Program at the Ohio State University Click here to view the article