Edgar G. Ordóñez-Rubiano

Molecular Reclassification of Diffuse Gliomas: A Feasibility Study of Clinical Features and Survival Outcomes in Colombia

Edgar G. Ordóñez-Rubiano, Fabiana Rodríguez, Cristian F. Siabato-Vargas, Luz Dary Gutiérrez-Castañeda et autres

Background/Objectives: The reclassification of gliomas in the 5th edition of the World Health Organization’s Classification of Tumors of the Central Nervous System (WHOCNS5) integrates histological and molecular criteria to improve diagnostic accuracy and enable an individualized treatment approach. This study aims to …

Association of serum biomarkers, immunohistochemical profiles, and preoperative clinical manifestations in patients undergoing endoscopic endonasal resection of pituitary neuroendocrine tumors

Edgar G. Ordóñez-Rubiano, Laura F. Bonilla-Mendoza, Julian D. Barraza-Diaz, Luis E. Umana-Laiton et autres

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Tubular retractor approach for resection of a subependymal giant cell astrocytoma (SEGA) in tuberous sclerosis complex (TSC): a case report

N. Nieto del Rincón, Joymar I. Jaimes, Kevin Duque, J. Orozco et autres

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Transethmoidal Transcribriform Endoscopic Approach to The Anterior Cranial Fossa: Technical Nuances, Indications, and Outcomes

Edgar G. Ordóñez-Rubiano, Laura Baeza-Antón, Antonia Cadavid-Cobo, Alejandra Ramírez-Romero et autres

Introduction: Extended endoscopic endonasal approaches have significantly advanced the surgical management of anterior skull base lesions. The transethmoidal transcribriform approach provides a minimally invasive corridor to the anterior cranial fossa and nasal cavity, avoiding large craniofacial osteotomies and brain retraction. This study …

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Technical Note of the Endonasal Endoscopic Transethmoidal Transcribriform Approach (EETTA) to the Anterior Cranial Fossa: An Update of the Surgical Technique, Indications, and Limitations

Edgar G. Ordóñez-Rubiano, Antonia Cadavid-Cobo, Alejandra Ramírez-Romero, Ana S. Rincón-Díaz et autres

Background: In the last few decades, endoscopic endonasal approaches (EEA) have revolutionized surgical access to the sellar region and anterior cranial fossa (ACF). One technique, the endoscopic endonasal transethmoidal transcribriform approach (EETTA), offers distinct advantages over traditional open transcranial approaches, such as …

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Insight into the Burden of CNS Infections with Neurosurgical Implications in a Latin American 2 Upper-Middle-Income Country: A Nationwide Study in Colombia

John M. Gonzalez, Alexandra Ramos Márquez, Sarah C. Pérez-Hernández, Marco A. Rincón-Jiménez et autres

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Association Between the Ki-67 Index, Tumor Size and Postoperative Structural Persistence in Non-functioning Pituitary Neuroendocrine Tumors: A Single-Center Experience

Carlos Eduardo Jiménez-Canizales, Juan S Salas-Henao, Gabriela Ballesteros-Oviedo, Rafael Parra‐Medina et autres

Introduction Non-functioning pituitary neuroendocrine tumors (NF-PitNETs) represent more than half of pituitary neoplasms. Features linked to greater aggressiveness include adrenocorticotropic hormone immunopositivity, plurihormonal or null-cell phenotype, elevated Ki-67 index (≥3%), and size ≥40 mm. However, evidence remains inconsistent, underscoring the need for …

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Scoping review of MicroRNAs as biomarkers for rupture risk prediction in intracranial aneurysms

Gustavo Adolfo Villegas-Gomez, María Alejandra Sierra, Luisa F Figueredo, Juan Fernando Ramón et autres

Background Intracranial aneurysms (IAs) pose a significant clinical threat due to their potential to rupture, often resulting in subarachnoid hemorrhage and high mortality. While imaging and computational models have improved aneurysm characterization, accurate rupture risk prediction remains elusive. MicroRNAs (miRNAs), which are …

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Trans-tonsillar approach for resection of a tumor located in the lateral aspect of the medulla: Operative video

Álvaro Campero, Juan F. Villalonga, Edgar G. Ordóñez-Rubiano, Carlos Castillo-Rangel et autres

Background: The purpose of this video is to describe the microsurgical corridor of the trans-tonsillar approach for resection of a tumor located in the right lateral aspect of the medulla. Case Description: We presented a 56-year-old patient with headache and diplopia. On …

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Concurrent Computed Tomography Angiography Spot Signs in Cerebral Contusion and Subdural Hematoma Following Severe Traumatic Brain Injury: A Case Report

Edgar G. Ordóñez-Rubiano, Javier M. Romero, Isabella Lacouture

The spot sign is a well-established radiologic marker associated with hematoma expansion and poor clinical outcomes in spontaneous intracerebral hemorrhage. However, its role in traumatic intracranial hemorrhages remains insufficiently characterized. We report the case of a 67-year-old man who sustained a severe …

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Redefining Chiari Malformation Type III: a systematic review of prognostic stratification based on a three-tier MRI-based anatomical classification

Felipe Gutiérrez Pineda, Nicolás Rincón-Arias, María Alejandra Sierra, Andres F. Salazar et autres

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The vascular safe zone for endoscopic third ventriculostomy: a radiomorphometric study

Nicolás Rincón-Arias, Nadín J. Abdalá-Vargas, Sabino Luzzi, Julian D. Barraza et autres

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