Publications by authors named "Akın Akakin"

Aim: To analyze the demographic and clinical data of preterm or low birth weight newborns with periventricular hemorrhage.

Material And Methods: This retrospective study analyzed patients admitted to the neonatal intensive care unit of a Bahcesehir University School of Medicine-Affiliated Hospital due to preterm birth or low birth weight between June 1, 2012, and April 30, 2021. Categorical values were evaluated by Pearson chi-square or Fisher's exact test.

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There are many types of neoplasms in or around the foramen of Luschka (FL), and definitive diagnosis in some cases requires knowledge of imaging findings. The uncommon and challenging neoplasms with FL involvement considered in this study are exophytic brainstem glioma, primary glioblastoma of the cerebellopontine angle (CPA), primary anaplastic ependymoma of the CPA, choroid plexus papilloma of the FL, solitary FL choroid plexus metastasis, extraskeletal myxoid chondrosarcoma of the jugular foramen, paraganglioma of the jugular foramen, exostosis of the jugular foramen, psammomatous meningioma in the lateral cerebellar medullary cistern, epidermoid tumor of the fourth ventricle, and a hypoglossal schwannoma. These neoplasms may have overlapping clinical and imaging features, but some have relatively distinct imaging features.

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Aim: To develop an approach for atrial application of ventriculoatrial (VA) shunts after revealing the venous anatomy with facial and cervical anatomical dissections.

Material And Methods: Five cephalic cadavers were used in the study. Facial and cervical regions of the cephalic cadavers were examined with layer by layer anatomical dissection.

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Aim: To investigate the effects of electromagnetic waves (EMWs) from mobile phones (MPs) on rat brains of rats by morphological and biochemical analysis.

Material And Methods: EMW was applied for two hours/day until birth in stand-by fetal and EMW fetal groups and postnatal 60 < sup > th < /sup > day in stand-by and EMW groups. The control group was not exposed to MP.

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Deep brain stimulation (DBS) is a standard surgical treatment method which is generally applied to subthalamic nucleus in Parkinson's patients in cases where medical treatment is insufficient in treating the motor symptoms. It is known that Subthalamic Nucleus Deep Brain Stimulation (STN-DBS) treats many motor symptoms. However, the results of studies on speech and voice vary.

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Background: Radiation exposure is a known risk factor for meningioma but there are no data regarding hemangiopericytoma and radiation exposure.

Case Description: We report a 29-year-old pineoblastoma patient diagnosed with a hemangiopericytoma at a different location, after a successful surgical excision and adjuvant radiotherapy for the original tumor 4-year prior.

Conclusion: Hemangiopericytoma emergence can be seen after radiotherapy.

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Distal MCA aneurysms are rarely seen in daily neurosurgical practice and they are, more commonly associated with infectious processes. Here, the authors present a 65-year-old, patient who had an atherosclerotic M4 segment located aneurysm. It was confirmed, that the aneurysm was not related with any infectious process.

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A 4-year-old girl presented to the hospital with a progressive headache, difficulty walking, and persistent daily vomiting for 3 weeks. Papilledema was observed on fundoscopic examination. A large left cerebellovermian tumor with "bubbly" appearance was discovered.

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Purpose: To date, application of intraoperative magnetic resonance imaging (ioMRI) to enhance surgical quality for spinal intramedullary neoplastic lesions has been rarely reported. Moreover, in developing countries or regions, ioMRI accessibility remains very limited. This report describes a technology design of high-field ioMRI accessible for multioperation rooms via a case presentation of an imaging-assisted surgical excision of human cervical spinal cord diffuse glioma.

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Chondrosarcoma is the second most common primary malignancy of bone after osteosarcoma. Cranial primary chondrosarcomas mostly originate from the skull base cartilage formation zones. Parasagittal falcine origin is very rare for primary extra-skeletal intracranial chondrosarcomas.

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Ventriculoperitoneal shunt systems that are used in the treatment of normal pressure hydrocephalus are often associated with drainage problems. Adjustable shunt systems can prevent or treat these problems, but they may be expensive. The aim of our study is to compare the complications and total cost of several shunt systems.

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The authors present an extremely rare case of an aggressive and progressive vertebral capillary hemangioma of the lumbar spine secondary to a trauma. A 40-year-old man who complained of back and leg pain due to a hemangioma of L1 that had begun a year after the fracture of the same vertebra was subsequently operated on. Due to the profuse bleeding, only a subtotal removal was possible.

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Wilms' tumor is the most common malignant renal tumor in childhood. The brain metastasis of a Wilms' tumor with anaplastic histopathology is rare. We present the case of an 8-year-old girl with Wilms' tumor, who presented with multiple brain metastases 5 years after her primary diagnosis.

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Background: Tumors of the middle fossa or cavernous sinus (CS), or intraorbital tumors, can penetrate each other through the superior orbital fissure (SOF) or neighboring tissue. These complicated pathologies are often treated with highly invasive surgical procedures. In this article, we demonstrate surgical anatomic dissections of the CS, SOF, orbital apex (OA), and dura mater extending to the periorbita from the middle fossa, by performing an epidural dissection via a lateral orbitotomy approach, and discuss findings that may provide guidance during surgery in these regions.

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OBJECTIVE Brain arteriovenous malformations (AVMs) can occur in patients with hereditary hemorrhagic telangiectasia (HHT). However, brain AVM without HHT has also been reported. Using whole exome sequencing, the authors performed comprehensive genomic characterization of a 6-person Turkish family with 3 cases of brain AVM without HHT.

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Aim: National and international society meetings are suitable mediums at which diverse research topics from basic, clinical and translational sciences can be presented to an audience of peers. In this study, our purpose was to evaluate publication rates of presentations in the last recent four years" annual scientific meetings of Turkish Neurosurgical Society (TNS).

Material And Methods: Abstracts of both podium and poster presentations were retrieved from the congress booklets of TNS.

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Cranial chronic subdural hematoma (CSH) occurs secondary to trauma or just spontaneously. In this clinical report, the authors presented a 39-year-old male patient who was admitted with cranial CSH. In further assessment of the patient, the authors found an underlying cerebrospinal fluid (CSF) leak at the level of cervical spine.

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Purpose: This study aims to analyze the historical cohort of patients with atretic cephaloceles (ACs) comprehensively, since the literature regarding ACs is limited by small case series or case reports and to report a new venous anomaly concomitant with a parietal AC in our exemplary case.

Methods: After a PubMed/Medline search with "atretic cephalocele" in April 2016, we retrieved 42 articles, 41 of which were relevant with the topic. Full texts of accessible articles and abstracts of inaccessible articles were read comprehensively.

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Foot drop is an inability to dorsiflex the ankle and toe. Primary causes of foot drop are compression or lesion of the 5th lumbar nerve and entrapment of the peroneal nerve at the head of the fibula. Rarely, some central nervous system lesions lead to foot drop.

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Aim: Cadaveric studies have a great impact on neuroanatomy learning. Cadaver preparation may take a lot of effort, especially at the phase of intravascular color filling. The authors describe their silicone dye technique and a novel mixture which is self-curing, quick to prepare and easy to inject.

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Article Synopsis
  • The study investigates the incidence of vertebral artery (VA) loops, a congenital or acquired anomaly, using magnetic resonance angiography in a cohort of patients.
  • Out of 239 patients evaluated, 13 were found to have medial loops, predominantly affecting older individuals and more commonly in females, with radiculopathy and neck pain being the main symptoms.
  • The research emphasizes the importance of pre-operative assessment to prevent complications during surgery, particularly with undiagnosed VA loops, which can have serious consequences.
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A combination of trauma and a missed inflammatory response (nasal operation) concomitant with hydrocephalus and tumor in secondary encephalocele has not been described in the English literature yet. A 38-year-old man was admitted to the clinic with rhinorrhea that started 3 months ago. In his medical history, nothing abnormal was present except a nasal operation performed 1 year ago.

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In this case-based review, the authors analyzed relevant literature with an illustrative patient of theirs about subdural hematoma secondary to dural tear at spinal surgery. Intracranial hypotension is a condition of decreased cerebrospinal fluid volume and pressure. Even though intracranial hypotension is temporary and can be managed conservatively, it may progress and result in subdural fluid collections, hematoma formations, "brain sagging or slumping" states, syringohydromyelia, encephalopathy, coma, and even death.

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Article Synopsis
  • Aneurysmal bone cysts (ABCs) are benign cystic bone lesions filled with blood and can sometimes occur alongside fibrous dysplasia (FD), which is an abnormal bone growth.
  • In a rare case, a 14-year-old girl with McCune-Albright syndrome presented with ABCs in her skull and was treated with surgery to remove them and reconstruct her skull.
  • The combination of bilateral occipital ABCs, fibrous dysplasia, and Chiari malformation type 1 in this patient is an extremely uncommon occurrence, and successful diagnosis and treatment can lead to positive outcomes.
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