Endonasal endoscopic approach for sellar metastatic pathologies: a national observation.

Purpose: Sellar metastases are rare lesions. Recent improvements in diagnosis and treatment strategies have prolonged survival but increased the probability of metastatic tumors. Evaluation with clinical symptomatology and meticulous laboratory examination is crucial.

Transconjunctival Approach: A Safe and Effective Access to Mass Lesions in the Anterior Orbit.

Background: The orbit is an eloquent organ of the body. Safe surgical access to the orbit could be challenging due to the dense network of critical structures confined to it. There are versatile approaches to different parts of the orbit that could be used by neurosurgeons without causing injury to critical neurovascular structures.

The investigation of the role of the facet joint angle in the development of L5-S1 spondylolysis in young men.

Objectives: This study aims to evaluate facet tropism in younger patients with lumbar spondylolysis and to investigate the role of facet tropism in the development of spondylolysis.

Patients And Methods: Between February 2013 and December 2015, a total of 102 male patients with bilateral L5 pars defect including 53 with spondylolysis and 49 control subjects were included in this case-control study. The facet joint angles were measured bilaterally and axially at the level of L3-4, L4-5, L5-S1 using computed tomography (CT).

Pituitary macroadenomas (>3 cm) in young adulthood: Pathologic and proliferative characteristics.

Background: There are scarce data regarding the significance of the tumor size, hormonal activity and size of the pituitary tumor of the young; therefore, the study was designed to define the relation of the hormonal status of the large pituitary adenomas.

Objective: We compared those features with tumors of the elderly (>40) with the young patients, and analyzed the clinicopathologic and proliferative features of pituitary macroadenomas in young adulthood (≤40).

Methods: 20-year archives of pituitary tumors in our clinics were reviewed and macroadenomas with diameter≥3 cm were included in the study.

Basal cell adenocarcinoma of the parotid gland with rare scalp metastasis: a case report.

Salivary gland tumors constitute 3% of tumors in the body. Salivary gland tumors constitute 4% to 10.80% of all tumors in the head and neck tumors and most of them originate from the parotid gland.

Resection of a huge tufted angioma of orbit and orbitocranial mesh reconstruction.

Background And Study Aims: Tufted angiomas (TAs) are rare, benign vascular neoplasms of childhood mainly localized in the skin and subcutaneous tissues. TAs are progressive, slowly growing, and characteristically involve superficial or deep muscle fascia tissue. TAs are frequently seen before the age of 5 years (60 to 70%) and have no sex predominance.

The use of a simple self-retaining retractor in the endoscopic endonasal transsphenoidal approach to the pituitary macroadenomas: technical note.

Background: During tumor removal in the endoscopic endonasal approach to pituitary adenomas with a significant suprasellar extension, the early descent of diaphragma sellae obscuring the visualization of the surgical field is a surgical challenge.

Objective: To describe a simple diaphragma retraction technique to eliminate this problem.

Methods: A transparent flexible material (a strip of polypropylene) was used as a self-retaining retractor to elevate the redundant diaphragma and to maintain the diaphragma elevation.

Surgical management strategies of intracranial arachnoid cysts: a single institution experience of 75 cases.

Aim: Arachnoid cysts are benign intra-arachnoid cystic lesions filled with cerebrospinal fluid. With advent of modern treatment techniques, debate continues regarding which surgical treatment is most effective. MATERIAL and

Methods: A consecutive series of 75 patients with arachnoid cysts that were surgically treated between January 1992 and December 2009 are reported.

An evaluation of the effectiveness of pre-ischemic hyperbaric oxygen and post-ischemic aminoguanidine in experimental cerebral ischemia.

Objective: To study the effects of pre-ischemic hyperbaric oxygen (HBO) and post-ischemic aminoguanidine (AG) on the infarct volume in permanent middle cerebral artery occlusion.

Methods: This study was approved by the Animal Experiments Ethics Committee of Gulhane Military Medical Academy, Ankara, Turkey and carried out from March 2006 to August 2006. A total of 28 Sprague-Dawley rats (200-320 g) were divided into 4 groups: control (K) group (n = 7); HBO group (n = 7); HBO + AG group (n = 7); and the AG group (n = 7).

Use of an ultra-low field intraoperative MRI system for pediatric brain tumor cases: initial experience with 'PoleStar N20'.

Aim: Use of intraoperative MRI (iMRI) is the highest contemporary supportive means for brain tumor surgery. In this article we describe the issues related to iMRI use in pediatric cranial operations.

Material And Methods: Pediatric cases operated with the aid of Polestar N20 iMRI system are defined and the pros and cons of the system are emphasized.

The effect of about one third craniectomy on the cerebrospinal fluid flow rate as estimated by radionuclide cisternography in normal rabbits.

Since, the effect of a large cranial defect on the cerebrospinal fluid (CSF) flow rate is still not clear, this study was designed to evaluate the effect of craniectomy in rabbits by using a radionuclide technique, under in vivo physiologic conditions. Eleven male New Zealand white rabbits were examined. After the injection of technetium-99m-diethylene-triaminepenta-acetic acid into the fourth ventricle of each rabbit, dynamic acquisition for 60 min (1 min per frame) was performed pre-op followed by about one third craniectomy to each animal.

Meta-analyses of intracerebral hematoma treatment.

Aim: The aim of this study is to define the position of surgery preference in the treatment choice for spontaneous intracerebral hematoma (ICH) and to compare the efficacy of surgery with the medical treatment based on data from 18 previously reported randomized prospective studies on this topic.

Material And Methods: Literature databases and articles were searched from 1960 to 2010. Eighteen randomized studies on this topic were evaluated.

Endoscopic endonasal skull base surgery: analysis of complications in the authors' initial 800 patients.

Object: The development of endoscopic endonasal approaches, albeit in the early stages, represents part of the continuous evolution of skull base surgery. During this early period, it is important to determine the safety of these approaches by analyzing surgical complications to identify and eliminate their causes.

Methods: The authors reviewed all perioperative complications associated with endoscopic endonasal skull base surgeries performed between July 1998 and June 2007 at the University of Pittsburgh Medical Center.

Analysis of proximal radial nerve injury in the arm.

Background: Radial nerve is the most frequently injured major nerve in the upper extremity. Proximal part of the radial nerve involvement can result from a humerus fracture, direct nerve trauma, compression and rarely from tumors.

Objectives: The aim of the study is to determine the clinical characteristics and electrodiagnostic findings in patients with proximal radial nerve injuries, and also the outcome of surgical treatment.

Electrophysiological findings in patients with adult tethered cord syndrome.

Aim: This study was planned for detailed evaluation of electrophysiological findings in patients with adult TCS.

Material And Methods: Patients were retrospectively assessed for clinical, radiological and electrophysiological data between 1999 and 2008. Tibial somatosensorial evoked potentials, needle electromyography, nerve conduction studies and late responses (H reflex and F response) were studied in thirty (1 female, 29 males) TCS patients diagnosed by lumbar magnetic resonance imaging.

Surgical outcomes of the brachial plexus lesions caused by gunshot wounds in adults.

Background: The management of brachial plexus injuries due to gunshot wounds is a surgical challenge. Better surgical strategies based on clinical and electrophysiological patterns are needed. The aim of this study is to clarify the factors which may influence the surgical technique and outcome of the brachial plexus lesions caused by gunshot injuries.

Traumatic brain injury due to gunshot wounds: a single institution's experience with 442 consecutive patients.

Aim: Traumatic brain injury (TBI) caused by a gunshot wound is a complex injury with a broad spectrum of symptoms and high rates of mortality and morbidity. This study presents an evaluation of TBI caused by gunshot wounds presenting at a single institution and discusses possible predictive factors for the outcome of surgical intervention.

Material And Methods: The study sample consisted of 442 patients who underwent surgery for TBI over a 16-year period.

Tumors of the lateral ventricle: the factors that affected the preference of the surgical approach in 46 patiens.

Aim: Optimal surgical pathway for lateral ventricle tumors is still controversial. The purpose of this study is to discuss the factors that affected the preference of the surgical techniques for removing lateral ventricle tumors.

Material And Methods: 46 consecutive patients underwent operation for lateral ventricle tumors.

Comparison of the efficacies of antibiotic-impregnated and silver-impregnated ventricular catheters on the prevention of infections. An in vitro laboratory study.

Background And Objective: Infection of the cerebrospinal fluid is a life-threatening condition which is usually treated with systemic antibiotics and continued ventricular drainage in children. The aim of this study was to analyze the antimicrobial activities of two antimicrobial-agent-impregnated ventricular catheters and to compare their efficacies on the bacterial cultures.

Methods: Antibiotic-impregnated (clindamycin and rifampicin), silver-impregnated, and standard ventricular catheters were used in this study.

Cervical congenital midline meningoceles in adults.

Objective: The clinical presentation, biomechanical evaluation, and surgical techniques for repairing cervical meningoceles in adulthood are presented. Cervical meningoceles are typically diagnosed in childhood and are rarely reported among spinal dysraphic lesions in adulthood. In most cases, the cervical spinal cord is found tethered to the dura and other soft tissues by fibrous or fibroneural elements.

Transsphenoidal approaches to the pituitary: a progression in experience in a single centre.

Background: Evolving of a single centre by means of different transsphenoidal approaches during the survey of methodological advances in pituitary surgery is presented.

Materials And Methods: Ninety-three consecutive patients with pituitary adenomas underwent transphenoidal pituitary operations at Gulhane Military Medical Academy from January 1996 to October 2007. Retrospective chart-based analysis of the surgical methods of transsphenoidal pituitary adenoma operations were done.

Iliocaval arteriovenous fistula following lumbar disc surgery: endovascular treatment with a Stent-graft.

Arteriovenous (AV) fistulae, pseudoaneurysms, and lacerations may occur during disc surgery. AV fistula after lumbar disc surgery is rare. Early diagnosis and treatment of vascular complications associated with disc surgery is essential due to their high mortality and morbidity rates.

Tethered cord syndrome in adulthood.

Objective/background: The standard treatment for tethered cord syndrome (operative vs nonoperative management) that presents in adulthood remains controversial. A comparative study of tethered cord syndrome in adulthood is needed.

Design: A retrospective chart-based analysis.

Evaluation of spinal missile injuries with respect to bullet trajectory, surgical indications and timing of surgical intervention: a new guideline.

Study Design: Analysis of the patients with spinal missile injury (SMI).

Objective: Choosing the optimum treatment for SMI with respect to bullet trajectory, evaluation of surgical indications, and timing of surgical intervention.

Summary Of Background Data: A few guidelines were reported for the management of SMI.