Indocyanine Green Videoangiography in Negative: Spinal Dural Arteriovenous Fistula.

Introduction This work reports the first indocyanine green videoangiography (IGV) in negative published with video format support. This technique, so called because its first phase is performed with occlusion of the vessel suspected of being pathologic, is used for the diagnosis of spinal arteriovenous fistula (sDAVF). Case Report The authors present the case of a 68-year-old man with an sDAVF fed by the right T7 segmentary artery.

Indocyanine green videoangiography methodological variations: review.

Indocyanine green videoangiography (ICGVA) procedures have become widespread within the spectrum of microsurgical techniques for neurovascular pathologies. We have conducted a review to identify and assess the impact of all of the methodological variations of conventional ICGVA applied in the field of neurovascular pathology that have been published to date in the English literature. A total of 18 studies were included in this review, identifying four primary methodological variants compared to conventional ICGVA: techniques based on the transient occlusion, intra-arterial ICG administration via catheters, use of endoscope system with a filter to collect florescence of ICG, and quantitative fluorescence analysis.

Full endoscopic endonasal extreme far-medial approach: Eustachian tube transposition.

The complex anatomical relationships within the skull base have been described from an endoscopic point of view. However, systematic surgical, not just anatomical, management of the eustachian tube (ET) and the approach to the styloid and parapharyngeal spaces have not yet been described. The authors describe the full endoscopic endonasal extreme far-medial approach used in their surgical practice and show how they applied it to a case.

Indocyanine green videoangiography "in negative": definition and usefulness in intracranial dural arteriovenous fistulae.

Background: Indocyanine green videoangiography (IGV) raises important limitations when we use it in vascular pathology, especially in cases with arterialization of the venous system such as arteriovenous malformations and fistulae.

Objective: Our objective was to provide a simple procedure that overcomes the limitations of conventional IGV. We define IGV in negative (IGV-IN), so-called because, in its first phase, the vessel to analyze is clipped, and we report 3 cases of intracranial dural arteriovenous fistulae treated with this procedure.

[Esthesioneuroblastoma. Transcribiform-transfovea ethmoidalis endonasal expanded approach. Technical note].

Introduction: We report a fully endoscopic transcribiform-transfovea ethmoidalis endonasal expanded approach (EEA) for the treatment of esthesioneuroblastoma and review the literature about this entity available in English, establishing a precise surgical technique and describing our intraoperative experience.

Case Report: Our patient was a 65-year old female with anosmia and cognitive deterioration. Cranial MRI showed a large tumoral lesion with solid and cystic components involving the nasal cavity, with diagnostic suspicion of intracranial malignant sinonasal tumour.

[Transpterygoid expanded endonasal approach in fibrous dysplasia of the skull base: case report and technical note].

Introduction: Expanded endonasal approaches (EEA) are becoming a first-level technique for the treatment of skull base pathologies. In some cases, the endoscopic procedures make it possible to dissect structures manipulated with greater difficulty in the classic approaches. We report a full endoscopic transpterygoid EEA for the treatment of a fibrous dysplasia (FD) of the skull base.

Middle turbinate vascularized flap for skull base reconstruction after an expanded endonasal approach.

Introduction: The expanded endonasal approaches to the skull base are modular approaches that arise from the sphenoidal sinus. The reconstructive techniques in these approaches are key to avoid postoperative complications. Available flaps for reconstruction include the pedicled nasoseptal flap, the transpterygoid temporoparietal fascia flap, and the posterior pedicle inferior turbinate flap (PPITF), among others.