Relationship between optic nerve length and interoptic angle in the prediction of optic chiasm location.

Introduction And Objectives: The sellar region is an area in the base of the skull that is among the most common sites for tumors of the central nervous system. Surgical interventions are currently performed via different routes. While the optic chiasm occupies its expected position in 70% of the population, it can deviate from this position.

Neurosurgery training camp for medical student: experience of the Turkish neurosugery academy and Bursa Uludag University.

Introduction: To highlight the importance of hands-on experiences and mentorship in shaping the future workforce of specialized medical professionals via a Neurosurgery Training Camp.

Methods: Responses of the questionnaire regarding the Neurosurgery Training Camp organized by Bursa Uludag University's Faculty of Medicine and the Turkish Neurosurgery Academy were reviewed retrospectively. A one-day program was organized to introduce neurosurgery to medical students.

Intradural anatomy and mobilization techniques of oculomotor, trochlear and abducens nerve after microsurgical dissection: a cadaveric study.

Background: This study investigates the mobilization of cranial nerves in the upper clival region to improve surgical approaches. Cadaveric specimens (n = 20) were dissected to examine the oculomotor, trochlear, and abducens nerves. Dissection techniques focused on the nerves' intradural course and their relationship to surrounding structures.

Diagnostic value of cerebrospinal fluid levels of D-lactate, tumour necrosis factor-alpha and interleukin-6, -8, and -17 in suspected nosocomial meningitis.

Introduction: This study aimed to determine the diagnostic value of interleukin (IL)-6, IL-8, IL-17, tumour necrosis factor-alpha (TNF-α) and D-lactate levels in the cerebrospinal fluid (CSF) of nosocomial meningitis patients.

Methods: The CSF levels of cytokines and D-lactate were compared across 29 episodes of nosocomial meningitis, 38 episodes of pleocytosis (without meningitis) and 54 control subjects.

Results: The CSF levels of IL-6, IL-8, and D-lactate were higher in the group with nosocomial meningitis compared to the control group and the group with pleocytosis without meningitis ( P < 0.

Comparison of the effects of medical and surgical treatments in giant prolactinoma: a single-center experience.

Purpose: Giant prolactinomas, which have extremely large sizes and high prolactin (PRL) values, are rarely seen. Although medical therapy is effective, surgical treatment is more frequently applied due to slightly lower response rates and compression symptoms. This study aimed to compare the medical and surgical treatment results in giant prolactinomas.

Statistical Shape Analyses of the Brainstem in Chiari Patients.

Aim: To ascertain whether the brain stem?s shape differs in patients with syrinx and without syrinx in cases with Chiari malformation Type I (CM-1), relative to healthy controls.

Material And Methods: Data on marked brainstem regions were obtained from 2D digital image files. Generalized Procrustes analysis was used to evaluate shape differences among patients with syrinx, patients without syrinx, and healthy controls.

Resection of a Lower Clival Meningioma via Posterolateral Approach: Two-Dimensional Operative Video.

 This study aimed to demonstrate resection of a craniovertebral junction (CVJ) meningioma via the posterolateral approach.  The study is designed with a two-dimensional operative video.  This study is conducted at department of neurosurgery in a university hospital.

The anatomic variations and surgical windows among optic chiasm/nerves and carotid arteries in the sellar region play a role in choosing the best surgical approaches: A Cadaveric study.

Objective: Understanding the relationship between the carotid artery, optic nerve and the anterior clinoid process is the basis of surgical approaches performed in the subchiasmal region. The location of the optic chiasm, the length of the optic nerves, and the distance and angle between the optic nerves determine the route of surgical approaches. We have determined the types of optic chiasm to study the relationship between vascular and neural structures in this region.

Retrosigmoid Transtentorial Resection of a Petroclival Meningioma: 2-Dimensional Operative Video.

In this video, we aimed to demonstrate retrosigmoid-transtentorial resection of a 4.5 × 4 × 4.5 cm3 left-sided petroclival meningioma compressing the brainstem in a 62-yr-old male who presented with decreased hearing on the left and imbalance.

Statistical Shape Analysis of Cerebellum in Patients With Chiari Malformation I.

The surgical procedure is viewed as a typical treatment choice for patients with Chiari malformation (CM). Decompression is the preferred method for surgery, but it is not always possible to understand whether decompression has been successful especially in an early period. The present study focuses on investigating the shape differences in the cerebellums of Chiari patients compared with healthy controls, and to assess the clinical application of this situation whether if present.

Anatomical aspects of optic nerve decompression in transcranial and transsphenoidal approach.

Purpose: The proximal portion of the optic nerve is quite prone to injury at the entrance of the optic foramen by tumoral or traumatic pathologies. As a result, it is important to show which way and which part we can effectively and safely decompress the pathologies affecting the optic nerves. In this study, we compared the decompression of the proximal segment of the optic canal Likewise, we investigated the anatomy and histopathology of the opticocarotid region from below and above.

Leptomeningeal dissemination and vertebral bone involvement in a child with pilocytic astrocytoma.

In low-grade glioma, metastasis is rarely seen. Few cases of leptomeningeal dissemination have been reported in children. Vertebral bone metastasis has not been reported so far.

Transnasal Transsphenoidal Surgical Method in Pediatric Pituitary Adenomas.

Aim: To evaluate the clinical outcome in a 13-year consecutive series of children operated for pituitary adenomas with transnasal transsphenoidal surgery.

Methods: All patients <18 years who were operated on at our center by transsphenoidal surgery for pediatric pituitary adenomas were included in the study. Clinical features, hormonal profile, radiology, surgical approach, results and complications were analyzed.

Anatomical restrictions in the transsphenoidal, transclival approach to the upper clival region: a cadaveric, anatomic study.

Objective: Tumours in the clival region are difficult to remove surgically. Before the 1970s, clival tumours had very high mortality and morbidity rates.

Methods: An anatomic dissection was performed on 24 spheno-occipital bone blocks obtained from 28 adult cadavers.

The artery of Percheron revisited: a cadaveric anatomical study.

Background: The artery of Percheron (AOP) is a single thalamoperforating arterial trunk that provides bilateral supply to the paramedian thalami and the rostral midbrain. As this rare anatomical variant artery may be involved in endovascular procedures or encountered surgically during basilar terminus aneurysms, the present study was warranted.

Method: Thirty-four adult (20 male and 14 female) formalin-fixed cadaveric brains underwent dissection of the 68 posterior cerebral arteries.

Anatomical aspects in the transsphenoidal-transethmoidal approach to the optic canal: an anatomic-cadaveric study.

Background: Determining anatomic landmarks during a transsphenoidal-transethmoidal approach to the optic canal region is of critical importance.

Methods: Sella-parasella sphenoid bone blocks were extracted from adult cadavers. Anatomic dissections were performed in the optic canal region using a surgical microscope in 30 samples.

Surgical limits in transnasal approach to opticocarotid region and planum sphenoidale: an anatomic cadaveric study.

Background: The significance of medial and lateral opticocarotid recesses and the planum sphenoidale region in skull base pathologies for the transsphenoidal-transplanum approach were evaluated.

Methods: The sphenoid bone block samples were extracted from adult cadavers. Dissections and measurements in the opticocarotid and planum sphenoidale regions were performed in 29 samples using a surgical microscope.

Anatomy of the floor of the third ventricle in relation to endoscopic ventriculostomy.

Neuroanatomical structures that form the floor of the third ventricle (FTV) and neighboring tissues are important in the context of third ventriculostomy (TV) procedures. Thorough knowledge of the anatomical and histological organization of the region would be useful in understanding and preventing surgical complications. Taking the third ventricle region as a model, we aimed to simulate TV and make measurements of 23 cadaver brains, as well as perform histological examinations of the third ventricular floor on five cadaver brains.

Is supratentorial pressure difference clinically relevant? Analysis of 55 consecutive cases by bilateral intracranial pressure monitoring.

Objective: The purpose of this study is to explore the possibilities of an early warning system by measuring intracranial pressure differences in order to prevent secondary insults to the injured brain.

Methods: Fifty-five cases with a Glasgow coma scale (GCS) score 8 or below who presented with intracranial hypertension due to various intracranial pathologies underwent bilateral intraparenchymatous intracranial pressure (ICP) monitorization in an attempt to find out the existence of interhemispheric pressure differences. ICP values were recorded every 30 minutes during the first 24 hour interval.

Comparison of prognostic scores and surgical approaches to treat spinal metastatic tumors: a review of 57 cases.

Surgical treatment of metastatic spinal cord compression with or without neural deficit is controversial. Karnofsky and Tokuhashi scores have been proposed for prognosis of spinal metastasis. Here, we conducted a retrospective analysis of Karnofsky and modified Tokuhashi scores in 57 consecutive patients undergoing surgery for secondary spinal metastases to evaluate the value of these scores in aiding decision making for surgery.