Semi-sitting position and retrosigmoid approach for a large petroclival meningioma resection: 3-dimensional operative video.

Background: Petroclival meningiomas are still a neurosurgical challenge due to their proximity to cranial nerves and cerebral vasculature along the surgical corridor. The usual extension of large petroclival meningiomas is along the posterior fossa, frequently compromising and displacing adjunct cranial nerves such as the sixth and seventh-eight cranial nerve complex with brainstem compression, causing progressive neurological deficit and severe headache. The goal of sizeable petroclival meningioma surgery treatment is a maximal resection with preservation of neurological function.

Table of life for beneficiaries of the Institute of Security and Social Services of State Workers (ISSSTE), Mexico 2021.

Objective: Determine the life expectancy in the covered population of the Institute of Security and Social Services of State Workers in México for 2021.

Method: We used the abrogated method from Reed-Merrel, for calculate the life expectancy in age groups.

Results: By 2021, life expectancy general was 79.

Atlas of Nervous System Vascular Malformations: A Systematic Review.

Vascular malformations are frequent in the head and neck region, affecting the nervous system. The wide range of therapeutic approaches demand the correct anatomical, morphological, and functional characterization of these lesions supported by imaging. Using a systematic search protocol in PubMed, Google Scholar, Ebsco, Redalyc, and SciELO, the authors extracted clinical studies, review articles, book chapters, and case reports that provided information about vascular cerebral malformations, in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.

Recommendations for the provision of palliative care to people with COVID-19.

The pandemic of SARS-CoV-2 infection, which causes COVID-19, has deeply affected health systems and has had a significant impact on families, communities and nations. A comprehensive response strategy requires, in addition to epidemiological, scientific and technical considerations, for human suffering associated with disease, vulnerability and death not to be forgotten. Palliative care for people with suspicion or diagnosis of COVID-19 with serious evolution, and their families should also be a key part of organized actions that help alleviate suffering and improve quality of life by controlling symptoms, addressing psychological, emotional, social and spiritual needs, support for advanced care planning and its goals, end-of-life care, as well as support in complex decision-making and ethical problems, among others.

Meningo-orbital band detachment: A key step for the extradural exposure of the cavernous sinus and anterior clinoid process.

The meningo-orbital band (MOB) is the most superficial dural band that tethers the fronto-temporal dura to the periorbita. It is usually encountered when performing a pterional or fronto-temporo-sphenoidal approach, and it disrupts surgical access to deeper regions. Our objective was to perform a detailed anatomy study and a stepwise method to successfully detach the MOB using cadaveric specimens.

Minimally invasive asterional approach for microvascular decompression in trigeminal neuralgia.

Objective: Trigeminal neuralgia (TN) is a neuropathic disorder that can be treated surgically. This study aimed to present the surgical findings and the clinical outcomes of 26 patients with TN treated by minimally invasive asterional surgery.

Methods: Longitudinal descriptive study.

[Abordaje asterional mínimamente invasivo para descompresión microvascular en neuralgia del trigémino].

Objective: Trigeminal neuralgia (TN) is a neuropathic disorder that can be treated surgically. This study aimed to present the surgical findings and the clinical outcomes of 26 patients with TN treated by minimally invasive asterional surgery.

Methods: Longitudinal descriptive study.

[Drilling of the subarcuate fossa to release the anterior inferior cerebellar artery in a surgery of a vestibular Schwannoma].

Introduction: A retrosigmoid suboccipital approach is the route most commonly utilized to resect vestibular schwannomas (VS). However, the anterior inferior cerebellar artery (AICA) usually runs adjacent to internal auditory canal nerves, and its course may severely impede total tumor resection.

Case Report: A 38-year-old male patient presented with presumed grade T3B VS, diagnosed by magnetic resonance imaging (MRI).

Transzygomatic approach plus mini-peeling of middle fossa for devascularization of sphenoid wing meningiomas. Technical note.

Background: Sphenoid wing meningiomas account for 20% of supratentorial meningiomas. The main supply of these tumors is provided by branches of the middle and accessory meningeal arteries. Surgical resection of meningiomas requires early tumor devascularization.

Modified Orbitozygomatic Approach without Orbital Roof Removal for Middle Fossa Lesions.

Objective: The purpose of the present study was to describe an OrBitoZygomatic (OBZ) surgical variant that implies the drilling of the orbital roof and lateral wall of the orbit without orbitotomy.

Methods: Design : cross-sectional study. Between January 2010 and December 2014, 18 patients with middle fossa lesions underwent the previously mentioned OBZ surgical variant.

The Nuchal Lines as Anatomic Landmarks to Dissect the Muscles in the Far Lateral Approach.

Background: A critical step in the far lateral approach (FLA) is exposure of the V3 segment of the vertebral artery, located deep in the suboccipital triangle (SOT). Safe exposure of the SOT is achieved by means of a plane-by-plane dissection, which carries the risk of devascularization. A suitable alternative is to lift a cutaneous muscle flap including the 3 first muscle planes and leave the deepest plane (SOT) attached to the skull base.

Microsurgical Anatomy of the Interfascial Vein. Its Significance in the Interfascial Dissection of the Pterional Approach.

Background: The pterional approach (PA), together with its variants, is still one of the most common methods used by surgeons to reach the anterior and middle cranial base. A highly important technical detail during a PA is the preservation of the frontotemporal branch of the facial nerve, which can be achieved through an interfascial dissection.

Objective: To describe the anatomy of the interfascial vein (IFV), highlighting its recognition as a significant anatomic reference to perform an interfascial dissection (IFD).

Crossed-brain representation of verbal and nonverbal functions.

A 74-year-old, left-handed man presented with a rapidly evolving loss of strength in his right leg associated with difficulty in walking. MR images disclosed an extensive left hemisphere tumor. A neuropsychological examination revealed that language was broadly normal but that the patient presented with severe nonlinguistic abnormalities, including hemineglect (both somatic and spatial), constructional defects, and general spatial disturbances; symptoms were usually associated with right hemisphere pathologies.

[Intracranial tumor behavior of plasma cell neoplasms. Report of 2 cases and literature review].

Background: Multiple myeloma is a plasmatic cell neoplasm that is characterized by skeletal destruction, renal failure, anemia and hypercalcemia. The skull plasmacytomas represent less than 1% of the head and neck tumors, they can be the primary lesion or occur as a secondary manifestation of multiple myeloma in 20-30% of the patients, or they can even manifest several years later after the diagnosis of plasmacytoma. Although some of the lesions may be surgically accessible, the aggressive natural behavior will complicate the evolution of the patients.

Ping pong fractures: treatment using a new medical device.

Purpose: The aim of this study was to assess the use of a new medical device to elevate depressed skull fractures (DSFs) in newborns and minor infants.

Methods: Nine patients (ranging from 1 day to 9 months of age) with simple DSF underwent skull elevation by a new elevator medical device. This medical device comprises two elements: a pediatric resuscitator (CPR mask) connected to a 50-ml syringe.