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World Neurosurg 2020 Jun 29. Epub 2020 Jun 29.

Department of Orthopedic Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand. Electronic address:

Introduction: Spinal extradural arachnoid cyst (SEAC) is an uncommon cause of spinal cord compression. It results from a small dural defect that leads to cerebrospinal fluid (CSF) accumulation in the cyst and subarachnoid space, and the cyst can compress the spinal cord and nerve roots. Surgery is the treatment of choice in symptomatic patients, and most cases have an immediately satisfying outcome after surgery. Read More

Turk Psikiyatri Derg 2020 ;31(2):131-136

Arachnoid cysts are benign congenital malformations of the arachnoid which account for approximately 1.4% of the intracranial lesions. Although it is usually asymptomatic, it may be accompanied by headache, hydrocephalus and seizure. Read More

Acta Vet Scand 2020 Jun 20;62(1):32. Epub 2020 Jun 20.

Department of Veterinary Clinics, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, SP, 18618-681, Brazil.

Background: Lissencephaly is a brain malformation characterized by smooth and thickened cerebral surface, which may result in structural epilepsy. Lissencephaly is not common in veterinary medicine. Here, we characterize the first cases of lissencephaly in four Shih Tzu dogs, including clinical presentations and findings of magnetic resonance imaging of lissencephaly and several concomitant brain malformations. Read More

Curr Med Imaging 2020 May 30. Epub 2020 May 30.

Department of Endocrinology and Metabolic Diseases, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir. Turkey.

Background: The ectopic posterior pituitary (EPP) is a rare condition characterized by the ectopic location of posterior pituitary lobe associated with varying degree of stalk anomalies. The arachnoid cysts (AC) are benign lesions of the arachnoid, which account for 1% of all intracranial space-occupying lesions. Sellar/suprasellar ACs account for approximately 1% of all ACs. Read More

Front Endocrinol (Lausanne) 2020 5;11:256. Epub 2020 May 5.

Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan.

Whether girls with central precocious puberty (CPP) should undergo routine brain magnetic resonance imaging (MRI) to identify potential intracranial pathologies is controversial. To evaluate the brain MRI results of girls with CPP and identify the clinical and endocrine predictors of brain abnormalities. This retrospective study obtained data from pediatric endocrine clinics at Chang Gung Children's Hospital. Read More

Laryngoscope 2020 May 15. Epub 2020 May 15.

Center for Cranial Base Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA.

Objectives/hypothesis: The contralateral transmaxillary (CTM) approach is a new surgical approach that improves the surgical trajectory relative to the petrous segment of the internal carotid artery (ICA). Here, we present our clinical experience with the CTM approach to the petroclival region of the skull base.

Study Design: Retrospective review. Read More

World Neurosurg 2020 May 7;140:162-165. Epub 2020 May 7.

Neurosurgical Department, Lariboisière Hospital, Paris, France; Université Paris Diderot, Paris, France.

Background: Paraplegia after lumbar spinal surgery has been previously described. It was generally provoked by a missed thoracic compression because of degenerative processes, arachnoid cyst, and spinal cord tumor such as meningioma. We describe here a case of a patient with neurofibromatosis type 2 (NF-2) with multiple spinal meningiomas that developed postoperative paraplegia because of decompensation of spinal cord compression below and far from the operated level. Read More

J Craniofac Surg 2020 May 4. Epub 2020 May 4.

Department of Radiology, Ataturk University School of Medicine, Erzurum, Turkey.

Petrous apex cephalocel, also called arachnoid cyst or meningocele, is a rare cephalocele caused by protrusion of the posterolateral wall of the Meckel cave to the petrous apex. Increased intracranial pressure is thought to play a role in etiopathogenesis and is generally asymptomatic. Radiologically, they are expansile lesions with the same density or intensity as cerebrospinal fluid and may mimic cystic masses. Read More

Surg Neurol Int 2020 11;11:66. Epub 2020 Apr 11.

Department of Neurosurgery, University of Louisville, Louisville, Kentucky, United States.

Background: Dorsal arachnoid webs (DAWs) are rare clinical entities that can mimic other conditions on magnetic resonance imaging (MRI). Here, we present a case of DAW that was misdiagnosed on MR as a ventral cord herniation.

Case Description: A 35-year-old female presented with a 1-year history of lower extremity weakness and numbness. Read More

Childs Nerv Syst 2020 Jul 23;36(7):1393-1397. Epub 2020 Apr 23.

Division of Pediatric Neurosurgery, Ibaraki Children's Hospital, Mito, Ibaraki, Japan.

Introduction: Quadrigeminal arachnoid cyst (QAC) associated with encephalocele is rare; and while some treatments have been developed in recent years, no definite therapeutic approach for QAC has been established. Endoscopic treatment for arachnoid cyst is gaining popularity because it is relatively less invasive to the normal brain tissues.

Case Presentation: The patient, a 4-year-old girl, presented with QAC associated with congenital occipital encephalocele. Read More

J Laryngol Otol 2020 May 17;134(5):424-430. Epub 2020 Apr 17.

Department of Otorhinolaryngology, Queen Elizabeth University Hospital, Glasgow, Scotland, UK.

Objective: To determine the clinical significance of arachnoid cysts.

Methods: The scans of 6978 patients undergoing magnetic resonance imaging of the internal acoustic meatus for unilateral cochleovestibular symptoms were retrospectively reviewed. We identified the scans with arachnoid cysts, and assessed the statistical associations between the laterality, location and size of the arachnoid cyst, the laterality of symptoms, the patients' age and gender. Read More

Ear Nose Throat J 2020 Mar 24:145561320914774. Epub 2020 Mar 24.

Department of Oto-Rhino-Laryngology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China.

Growing skull fracture (GSF) is an uncommon post-traumatic complication, which accounts for approximately 0.05% to 1% of all skull fractures. Delayed diagnosis of GSF in adulthood is rare and often involved with a variety of neurological symptoms. Read More

Br J Neurosurg 2020 Mar 19:1-3. Epub 2020 Mar 19.

Department of Neurosurgery, Southwest Hospital, Third Military Medical University, Chongqing, China.

We report the first case of spinal cord atrophy developing 16 months after resection of multiple intraspinal arachnoid cysts. The patient presented with back pain and the cysts were successfully resected. Sixteen months later, her back pain recurred. Read More

Pediatr Radiol 2020 Jun 17;50(7):984-989. Epub 2020 Mar 17.

Department of Neuroradiology, Children's National Health System, 111 Michigan Ave. NW, Washington, DC, 20010, USA.

Background: The falx cerebelli is a retrocerebellar dural reflection. The MR spectrum of the fetal falx cerebelli has not been described.

Objective: To determine the prevalence of falx cerebelli abnormalities in the context of posterior fossa malformations and compare them to age-matched normal fetal MRI exams. Read More

Zhonghua Yi Xue Za Zhi 2020 Mar;100(8):610-613

Department of Neurosurgery, Hebei Genral Hospital, Shijiazhuang 050051, China.

To investigate the causes of misdiagnosis of suprasellar arachnoid cysts, analyze its characteristics and put forward the diagnostic basis and differential points. The clinical data fo 97 cases of suprasellar arachnoid cysts diagnosed and treated in the neurosurgery department of Beijing Tiantan Hospital and Hebei General Hospital from March 2015 to March 2019 were analyzed retrospectively. All patients underwent CT and MRI scans with obstructive hydrocephalus. Read More

World Neurosurg 2020 06 3;138:68-72. Epub 2020 Mar 3.

Department of Neurosurgery, Kanazawa University, Kanazawa, Ishikawa, Japan.

Background: Symptomatic intramedullary arachnoid cysts are rarely observed lesions, particularly in the pediatric age group. Treatment includes cyst fenestration or resection of the cyst wall, and recurrence after surgery has never been reported. We report a rare case of a spinal intramedullary arachnoid cyst, which recurred after cyst fenestration and required reoperation after a certain period. Read More

J Neurosurg Pediatr 2020 Mar 6:1-6. Epub 2020 Mar 6.

2Division of Pediatric Neurosurgery, Department of Neurosurgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland.

Spinal extradural arachnoid cysts (SEACs) are uncommon spinal lesions that may cause myelopathy, most frequently in the 2nd decade of life. There are multiple theories of their pathogenesis, and associated entities include spinal trauma, spina bifida, and the lymphedema-distichiasis syndrome. The authors report the case of an otherwise healthy, developmentally normal 13-year-old boy who presented with multiple SEACs. Read More

Insights Imaging 2020 Feb 13;11(1):23. Epub 2020 Feb 13.

Department of Neuroradiology, Hospital Universitari de Bellvitge, C. Feixa Llarga SN, 08907, L'Hospitalet de Llobregat, Spain.

The skull vault, formed by the flat bones of the skull, has a limited spectrum of disease that lies between the fields of neuro- and musculoskeletal radiology. Its unique abnormalities, as well as other ubiquitous ones, present particular features in this location. Moreover, some benign entities in this region may mimic malignancy if analyzed using classical bone-tumor criteria, and proper patient management requires being familiar with these presentations. Read More

Surg Neurol Int 2020 17;11:10. Epub 2020 Jan 17.

Departments of Neurosurgery, University of Louisville, Louisville, Kentucky.

Background: Sellar arachnoid cysts (SACs) are rare lesions and incidentally found on brain imaging. The pathophysiology is poorly understood. Some authors suggested that SACs develop as a herniation of arachnoid membrane through the diaphragma sellae followed by cyst formation. Read More

Clin Neuroradiol 2020 Jan 15. Epub 2020 Jan 15.

Department of Pediatric Neurology, University Children's Hospital Zurich, Zurich, Switzerland.

Purpose: The clinical variability of Blake's pouch cysts (BPC) may range from asymptomatic via ataxia to sequelae of decompensated hydrocephalus. On the other hand, Dandy-Walker malformation (DWM) and cerebellar vermis hypoplasia generally correlate with less favorable neurologic development. The aim was to illustrate the potential of prenatal and postnatal neuroimaging to distinguish a BPC or persistent BP from other posterior fossa malformations. Read More

J Pediatr Neurosci 2019 Oct-Dec;14(4):236-237. Epub 2019 Dec 3.

Department of Neurology, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India.

Cerebellar malformations are a rare group of disorders with clinical heterogeneity. The usual posterior fossa malformations comprise of the cystic lesions like Dandy-walker complex, enlarged cisterna magna or arachnoid cysts. The vermis is a commonly associated structure in both cystic and non-cystic posterior fossa malformations. Read More

World Neurosurg 2020 Mar 27;135:253-258. Epub 2019 Dec 27.

Department of Neurosurgery, Kanazawa University, Graduate School of Medical Science, Kanazawa, Japan.

Background: Generally, enlargement of arachnoid cysts (ACs) has been found mostly in cases occurring during early childhood. Therefore, progressively enlarged ACs found to be symptomatic in elderly patients are extremely rare, and the mechanisms have remained unexplored.

Case Description: Our first patient was a 72-year-old woman with memory disturbance, who had presented with a large cyst beneath the right temporal convexity 9 years previously. Read More

Childs Nerv Syst 2020 Jul 21;36(7):1415-1423. Epub 2019 Dec 21.

Department of Radiology, Acıbadem Mehmet Ali Aydınlar University, İstanbul, Turkey.

Purpose: The goal of this study was to determine stoma and flow patency with 3D SPACE T2 and 3D CISS sequences in cases with cystocisternostomy or cystoventriculostomy.

Methods: A total of sixty three patients (total 106 MRI examinations) with endoscopic cystocisternostomy or cystoventriculostomy of arachnoid cyst underwent 1.5-3 T MRI to determine flow patency between June 2007 and April 2018. Read More

World Neurosurg 2020 Mar 10;135:87-95. Epub 2019 Dec 10.

Department of Neurosurgery, University Hospital 12 de Octubre, Madrid, Spain.

Background: Spinal arachnoid cysts are a rare cause of compressive myelopathy. Spinal extradural arachnoid cysts (SEACs) are even rarer.

Methods: We retrospectively reviewed the SEACs operated on in our hospital between 2015 and 2019, according to their clinical and radiologic findings, treatments performed, and outcomes. Read More

World Neurosurg 2020 Mar 12;135:130. Epub 2019 Dec 12.

Department of Neurological Surgery, Mayo Clinic Florida, Jacksonville, FL.

Iatrogenic lumbar arachnoid cysts are a rare occurrence after intradural surgery. To our knowledge, there is only 1 other previous case reported in the literature contributing to a symptomatic tethered cord. We present a surgical video (Video 1) demonstrating the history, preoperative workup, and operative technique for exploration and fenestration of a symptomatic iatrogenic lumbar arachnoid cyst with a tethered cord. Read More

Br J Neurosurg 2019 Dec 11:1-4. Epub 2019 Dec 11.

Department of Neurosurgery, Hull University Teaching Hospitals, Hull, UK.

We describe an 81-year-old gentleman presenting with mild myelopathic symptoms in the upper limbs. Imaging showed a C1-3 intradural extramedullary lesion initially thought to be an arachnoid cyst. A C1 + 2 hemilaminectomy and partial excision was performed with histology revealing a neurenteric cyst (NC). Read More

Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019 Nov;54(11):819-825

Department of Otorhinolaryngology Head and Neck Surgery, Tianjin HuanHu Hospital, Tianjin 300350, China.

To investigate magnetic resonance imaging (MRI) characteristic and differential diagnostic keypoints of common sellar regional cystic lesions with the purpose of improving differential diagnostic accuracy. In total, 174 cases of the pathologically diagnosed cystic lesions in sellar region between March 2016 and June 2019 were included in the current retrospective analysis. These cases included Rathke's cleft cyst (=68), craniopharyngioma (=48), pituitary adenoma (=56) and arachnoid cyst (=2) in the sellar region. Read More

Ultraschall Med 2019 Dec 3;40(6):692-721. Epub 2019 Dec 3.

Institute of Human Genetics, Medical University Graz, Austria.

Fetal neurosonography and the assessment of the posterior fossa have gained in importance during the last 2 decades primarily due to the development of high-resolution ultrasound probes and the introduction of 3 D sonography. The anatomical development of the posterior fossa can be visualized well with the newest ultrasound technologies. This allows better knowledge of the anatomical structures and helps with understanding of the development of malformations of the posterior fossa. Read More

Childs Nerv Syst 2020 02 30;36(2):235-240. Epub 2019 Nov 30.

Department of Neurosurgery, Children's Hospital of Soochow University, 92 Zhongnan Street, Suzhou, 215006, Jiangsu, People's Republic of China.

Purpose: The acquired Chiari type I malformation is a rare late complication of supratentorial shunting in children which is often accompanied by abnormal cranial vault thickening. Several surgical treatments for this disease have been proposed including supratentorial skull enlarging procedures and subtentorial craniotomy. But there is still debate about the best treatment strategy for this disease. Read More

Pediatr Neurosurg 2020 26;55(1):62-66. Epub 2019 Nov 26.

Department of Pediatric Neurosurgery, Children's Hospital of Michigan, Detroit, Michigan, USA.

Introduction: Sellar/suprasellar arachnoid cysts are infrequent nonneoplastic cystic lesions that account for approximately 1% of all arachnoid cysts. While various surgical treatment options have been proposed for symptomatic lesions, treatment guidelines regarding the management of asymptomatic sellar/suprasellar arachnoid cysts remain to be elucidated. This case series aims to provide a better insight into the management and outcomes of such lesions. Read More

Arch Med Sadowej Kryminol 2019 ;69(1-2):70-81

Zakład Medycyny Sądowej Uniwersyteckiego Szpitala Klinicznego w Opolu, Polska/Department of Forensic Medicine, University Clinical Hospital in Opole, Poland.

The study was an attempt to characterize symptoms and factors suggesting a traumatic cause of pericerebral space widening in infants. This heterogeneous group of disorders, rarely observed in forensic pathological practice, poses consultative problems, as it may be difficult to distinguish between spontaneous disease-related changes and traumatic complications, and differentiate accidental from non-accidental trauma. The study is based on the records of two cases submitted for examination in order to determine the degree of health impairment. Read More

Pol Merkur Lekarski 2019 Oct;47(280):134-138

Department of Neurosurgery, Shupyk National Medical Academy of Postgraduate Education, Kyiv, Ukraine.

Currently, neuroimaging changes in boxers who have suffered repeated traumatic brain injury (TBI) have not been sufficiently studied and analyzed. To detect such changes, magnetic resonance imaging (MRI) is the most informative.

Aim: The aim of study was to investigate the features of MRI changes in boxers with repeated TBI. Read More

Cerebellum 2020 Feb;19(1):58-67

INSERM U1000, Department of Pediatric Radiology, Hôpital Necker Enfants Malades, AP-HP, University René Descartes, Institut Imagine and UMR 1163, Paris, France.

Posterior fossa arachnoid cysts (PFAC) may produce not only neurological symptoms but also other symptoms still poorly understood such as behavioral and learning deficits, awkwardness, and difficulties in social interaction. These subtle social impairments have not been formally described and their underlying brain mechanisms remain unknown. In the present case-control study, we aimed to empirically characterize social impairments in a pediatric population with PFAC using eye tracking. Read More

Korean J Neurotrauma 2019 Oct 17;15(2):214-220. Epub 2019 Oct 17.

Department of Neurosurgery, Chungnam National University Hospital, School of Medicine, Chungnam National University, Daejeon, Korea.

We encountered a very rare case of spontaneous spinal cerebrospinal fluid (CSF) leakage and a spinal intradural arachnoid cyst (AC) that were diagnosed at different sites in the same patient. These two lesions were thought to have interfered with the disease onset and deterioration. A 30-year-old man presented with sudden neck pain and orthostatic headache. Read More

Korean J Neurotrauma 2019 Oct 28;15(2):170-175. Epub 2019 Aug 28.

Department of Neurosurgery, Soonchunhyang University Seoul Hospital, Seoul, Korea.

We report 3 cases of arachnoid cysts (ACs) that completely disappeared after burr hole drainage, without cyst fenestration into the subarachnoid space or cystoperitoneal shunt. The first patient was a 21-year-old female with an AC of the right cerebral convexity, found incidentally. After endoscopic AC fenestration was performed, the patient complained of persistent headache. Read More

Am J Med Genet C Semin Med Genet 2019 12 11;181(4):650-657. Epub 2019 Nov 11.

Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan.

Specific classes of de novo heterozygous gain-of-function pathogenic variants of the PDGFRB (platelet-derived growth factor receptor-beta) cause a distinctive overgrowth syndrome, named the Kosaki overgrowth syndrome (KOGS) (OMIM #616592). Until now, six patients with this condition have been reported in the literature. In addition to skeletal overgrowth, these patients exhibit hyperelastic, translucent, and fragile skin, scoliosis, progressive loss of subcutaneous adipose tissue, skull deformity, infantile myofibromas, neuropsychiatric symptoms, and arachnoid cysts in the posterior fossa and periventricular white matter signal abnormalities on neuroimaging. Read More

Surg Neurol Int 2019 27;10:189. Epub 2019 Sep 27.

Program in Health Sciences-IAMSPE, São Paulo, Brazil.

Background: Arachnoid cysts are benign extra-axial lesions corresponding to 1% of intracranial expansive lesions. They are usually incidental findings in asymptomatic patients. Most cases are congenital, and when symptomatic are diagnosed in childhood or adolescence. Read More

Spinal Cord Ser Cases 2019 13;5:45. Epub 2019 May 13.

2University of Health Sciences, Dışkapı Yıldırım Beyazıt Training and Research Hospital, Department of Physical Therapy and Rehabilitation, Ankara, Turkey.

Introduction: Spinal extradural arachnoid cysts (SEACs) are rare expansive lesions that account for ~1% of all spinal tumors. They develop as the result of arachnoid membrane herniation through a small dural defect and are mostly reported to be located at lower thoracic region and thoracolumbar junction.

Case Presentation: We report a rare case of SEAC located in the cervicothoracic junction causing neurologic compression. Read More

Ultrasound Obstet Gynecol 2020 Jul;56(1):78-85

Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria.

Objective: Normal cognitive development usually requires a structurally intact and complete cerebellar vermis. The aim of this study was to evaluate whether quantification by fetal magnetic resonance imaging (MRI) of vermis- and brainstem-specific imaging markers improves the definition of cystic posterior fossa malformations (cPFM).

Methods: Fetuses diagnosed with cPFM that had an available midsagittal plane on T2-weighted MRI were identified retrospectively and compared with gestational-age (GA) matched brain-normal controls. Read More

World Neurosurg 2020 Jan 28;133:80-83. Epub 2019 Sep 28.

Department of Anatomical Pathology, Faculty of Health Sciences, University of Pretoria, Steve Biko Academic Hospital, Pretoria, South Africa.

Background: Bobble-head doll syndrome is a rare neurological syndrome presenting with repetitive anteroposterior head movements. It is usually associated with expansile cystic lesions in the third ventricular region.

Case Description: An 8-year-old boy presented with involuntary bobbling head movements. Read More

Turk Neurosurg 2020 ;30(2):307-311

Istinye University, Faculty of Medicine, Canakkale Anadolu Hospital, Department of Neurosurgery, Canakkale, Turkey.

Spinal intradural arachnoid cysts (SIACs) are cerebrospinal fluid (CSF) sacs formed by arachnoid membranes. They may be idiopathic or acquired. Treatment is resection, fenestration, or cyst drainage. Read More

Oman Med J 2019 Sep;34(5):464-468

Dental School, Boston University, Massachusetts, USA.

Desmoplastic infantile ganglioglioma (DIG) is a rare supratentorial brain tumor, which is usually diagnosed before the age of two and has a favorable prognosis. To date, only a few cases have been reported in the literature. We report a case of DIG in a three-month-old boy who presented to our pediatric emergency department with decreased activity and excessive crying. Read More

Br J Neurosurg 2019 Sep 24:1-5. Epub 2019 Sep 24.

Department of Neurosurgery, International St. Mary's Hospital, Catholic Kwandong University , Incheon , Korea.

Spinal intradural arachnoid cysts (SACs) account for approximately 10% of total arachnoid cysts, and iatrogenic attribution is rare. A 50-year-old male presented with low back pain and severe radiating pain in his right leg along the S1 dermatome. He had an interspinous device (ISD) inserted 10 years earlier. Read More

Middle East Afr J Ophthalmol 2019 Apr-Jun;26(2):114-116. Epub 2019 Aug 26.

Harare Eye, Ear, Nose and Throat Institute, Harare, Zimbabwe.

Cysticercosis is a parasitic infection caused by the larvae of the cestode . Ocular parasitosis in humans is well recognized; however, cysticercosis of the optic nerve is rare. Here, we report a case of an adult male who presented with right-sided headache and a gradual loss of vision in the right eye. Read More

Surg Neurol Int 2019 19;10:141. Epub 2019 Jul 19.

Departments of Neurosurgery, Tokyo Metropolitan Police Hospital, 4-22-1 Nakano, Nakano-ku, Tokyo, Japan.

Background: Endodermal cysts are uncommon cystic lesions usually located at the ventral aspects of the spine. A lateral supratentorial location of such cysts is extremely rare. A unique case of a lateral supratentorial endodermal cyst that required surgical intervention due to uncal herniation, complicated with postoperative seizures, is presented. Read More

World Neurosurg 2020 Jan 7;133:e241-e251. Epub 2019 Sep 7.

Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.

Background: Cystic sellar masses (CSMs) pose diagnostic and therapeutic challenges associated with subtotal cyst wall resection, cerebrospinal fluid (CSF) leak repair, and disease recurrence. Current magnetic resonance imaging (MRI) interpretation often cannot reliably differentiate CSMs, mandating adaptable intraoperative strategies. We reviewed our diagnostic and therapeutic experience after endoscopic endonasal approaches (EEAs) for CSMs. Read More

Braz J Otorhinolaryngol 2019 Aug 6. Epub 2019 Aug 6.

University of Perugia, Otolaryngology Department, Perugia, Italy.

Introduction: An arachnoid cyst in the internal auditory canal is a quite rare pathology but due to its compressive action on the nerves in this district should be surgically removed. Several surgical techniques have been proposed but no surgeons have used the minimally assisted endoscope retrosigmoid approach for its removal.

Objective: To investigate the feasibility of using a minimally invasive endoscope assisted retro-sigmoid approach for surgical removal of arachnoid cysts in the internal auditory canal. Read More

Neurosurg Rev 2019 Sep 6. Epub 2019 Sep 6.

Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, South Fourth Ring West Road 119, Fengtai District, Beijing, 100067, People's Republic of China.

To investigate the effectiveness of endoscopic fenestration in the patients with prior failed ventriculoperitoneal (VP) shunt treatment of suprasellar arachnoid cysts (SACs). Between 2012 and 2018, four pediatric patients of SACs with previous failed VP shunt treatment were surgically treated using endoscopic ventriculocystocisternostomy (VCC) in our hospital. The clinical symptoms, imaging data, and surgical outcomes were collected and analyzed retrospectively. Read More

BMC Psychiatry 2019 09 5;19(1):274. Epub 2019 Sep 5.

Department of Geriatric Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, J5, 68159, Mannheim, Germany.

Background: Intracranial arachnoid cysts are usually benign congenital findings of neuroimaging modalities, sometimes however, leading to focal neurological and psychiatric comorbidities. Whether primarily clinically silent cysts may become causally involved in cognitive decline in old age is neither well examined nor understood.

Case Presentation: A 66-year old caucasian man presenting with a giant left-hemispheric frontotemporal cyst without progression of size, presented with slowly progressive cognitive decline. Read More

J Int Med Res 2019 Sep 26;47(9):4530-4536. Epub 2019 Aug 26.

Department of Orthopaedic Surgery, Nihon University School of Medicine, Tokyo, Japan.