Bilateral Radioscopically Guided Erector Spinae Plane Block for Postoperative Analgesia in Spine Surgery: A Randomized Clinical Trial.

Background:  We compare two perioperative pain management procedures(a radioscopicallyguided erector spinae plane [ESP] block versus the standard wound infiltration technique with local anesthetics) in patients undergoing lumbosacral spine surgery.

Methods:  A randomized, double-blind clinical trial was performed, in which adults at our hospital undergoing lumbosacral surgery without fixation were randomly assigned to receive either the standard wound infiltration technique, employing long-term anesthetics, or a radioscopicallyguided ESP block. Postoperative pain severity, morphine consumption, number of patients immobilized due to wound pain, length of hospitalization, and complications were recorded.

Relationship between the posterior septal artery and the upper edge of the choana.

Background: The pedicled nasoseptal flap has been a key element in advancing the endoscopic transnasal approach (ETA) for the treatment of skull base lesions from the anterior cranial fossa to the occipitocervical junction. To preserve vascular supply, an anatomical knowledge of the location of the posterior septal artery (PSA) is essential. The objective of this work is to establish the relationship between PSA and the superior edge of the choana to define a safety margin during the opening of the sphenoidal rostrum preserving PSA.

Endoscopic versus Microscopic Pituitary Adenoma Surgery: A Single-center Study.

Background: Transsphenoidal approach became the gold standard in the surgical treatment of pituitary adenomas in the past years, but the comparative efficacy of microscopic and endoscopic transnasal surgery has not been fully studied.

Aims: To compare the microscopic and endoscopic transnasal approaches for the treatment of pituitary adenomas.

Settings And Design: A retrospective analysis was performed, comparing adult patients with pituitary adenomas who had undergone transnasal microscopic surgery between January 2006 and December 2014 with the patients operated on with endoscopic surgery between March 2011 and December 2014 at Hospital Italiano de Buenos Aires.

[Usefulness of minimally invasive spine surgery for the management of thoracolumbar spinal metastases].

Objective: To describe the surgical results and evolution of patients who underwent minimally invasive spine surgery (MISS) for the treatment of thoracolumbar spinal metastases, using the NOMS (Neurological, Oncological, Mechanical, Systemic) assessment for the therapeutic decision.

Methods: Patients who underwent MISS technique for the treatment of thoracolumbar spinal metastases were prospectively enrolled at the Hospital Italiano de Buenos Aires, from June 2014 to June 2017. In all cases, the NOMS assessments were performed for therapeutic decision making.

Safety margin for the preservation of the nasoseptal artery during trans-nasal endoscopic approach.

Background: The introduction of the nasoseptal flap for the reconstruction of extended endoscopic approaches decreased the incidence of postoperative fistula. In order to preserve the septal vascular pedicles, many have started to prepare the flap systematically, prior to the opening of the sphenoid rostrum. The aim of this study is to obtain an average measure of the location of the posterior septal artery using the upper edge of the choana as a landmark.

Flow Diverter for the Treatment of Pseudoaneurysms of the Extracraneal Vertebral Artery: Report of Two Cases and Review of the Literature.

Background: Pseudoaneurysms (PAs) of the extracranial vertebral artery (VA) are rare lesions, representing less than 1% of all aneurysms. Although these lesions may resolve spontaneously, they present a high rupture rate, so early preventive treatment is advised.

Case Description: Case 1: A 48-year-old woman presented with pain and cervical rigidity.

[Optical coherence tomography as a predictor of visual recovery in patients with pituitary macroadenomas].

Background: With pituitary macroadenomas, there is a high incidence of visual loss from optic pathway compression. Surgical removal of the tumor usually prevents progression and allows visual recovery. Our objective was to evaluate if optical coherence tomography (OCT) predicts visual outcomes after surgical decompression.

[Relevance of Simpson's grades in the resection of grade I meningiomas].

Objective: Compare the number of recurrences in patients with WHO Grade I meningiomas that underwent microsurgical resection.

Introduction: In 1957 Simpson established five grades for surgical resection for intracranial meningiomas and recurrence rate. He thought that an aggressive removal of these tumors with dura and bone was necessary to cure them.

[Endoscopic treatment of 140 pituitary tumors, results and complications].

Objective: To present the clinical and radiographic outcomes of 140 patients with pituitary adenomas treated by an endoscopic endonasal approach (EEA) over a period of 4 years.

Material And Methods: A retrospective analysis was performed between 2011 and 2014. Pre and post operative MRI, ophtalmological assessment, endocrinological laboratory evaluation and surgical morbidity and mortality were assessed.