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https://www.readbyqxmd.com/read/28748803/serial-mri-scan-of-posterior-fossa-tumours-predict-patients-at-risk-of-developing-neurocognitive-impairment
#1
Ramadhan Othman, Kurdistan Gh Abdullah
Background: Brain tumours are the most common solid tumours in children. More than 50% of these tumours develop in the posterior cranial fossa. Long term survivors of posterior fossa tumours (PFT) suffer from neurocognitive and memory issues. We hypothesized that serial MRI scanning of brain would show differences in hippocampal and ACC volume change in PFT patients treated with and without chemo-radiotherapy. Material and Methods: Twelve patients (8 females and 4 males) underwent 76 serial MR imaging examinations before and during treatment for posterior fossa tumours...
July 27, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28748363/type-ii-sciatic-nerve-variant-an-unexpected-interventional-hazard
#2
Graeme Thompson, Ruan Visagie
A 12-year-old girl presented with a 1-week history of right hip pain. MRI revealed a lesion in the incompletely fused posterior triradiate cartilage of the right acetabulum with imaging characteristics of an osteoid osteoma. The surgeon requested guidewire placement under CT guidance for lesion drilling. The CT approach was planned to avoid the usual course of the sciatic nerve, and the lesion was successfully removed and confirmed at histology to be an osteoid osteoma. At a follow-up visit, MRI showed no recurrence but demonstrated an abnormal common peroneal nerve from the sciatic notch to the popliteal fossa with denervation oedema in the tibias anterior and peroneal musculature...
July 26, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28744773/alveolar-soft-part-sarcoma-the-new-primary-intracranial-malignancy-a-case-report-and-review-of-the-literature
#3
REVIEW
Aditaya Kumar, B Alrohmain, W Taylor, P Bhattathiri
The purpose of this paper is to serve as a reference to aid in the management of this poorly understood intracranial malignancy. The authors report their experience treating the eighth ostensible case of a primary intracranial alveolar soft part sarcoma (ASPS). A 21-year-old man presented to hospital after collapsing. He gave a 1-year history of headache, a 2-month history of reduced visual acuity and on examination had left facial paraesthesia with left-sided incoordination. MRI of the brain revealed a large left posterior fossa mass...
July 26, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28741227/posterior-fossa-pilomyxoid-astrocytoma-with-spontaneous-hemorrhage-in-pediatric-patients
#4
Jintao He, Xiang Li, Wanchun Zhu, Chunde Li, Jian Gong
OBJECT: The tumor described in this report was unique because of its involvement with a posterior fossa spontaneous hemorrhage in a pediatric patient; such a case has never been previously described in cases of pilomyxoid astrocytomas and also rarely found in those of pilocytic astrocytomas. METHODS: This report studied a rare case of posterior fossa pilomyxoid astrocytoma (PMA) with critical and dangerous spontaneous hemorrhage. A 7-year-old girl appeared at the outpatient clinic with sudden headache and vomiting...
July 24, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28740935/effects-of-vertebral-body-sparing-proton-craniospinal-irradiation-on-the-spine-of-young-pediatric-patients-with-medulloblastoma
#5
Iain MacEwan, Brian Chou, Jeremy Moretz, Lilia Loredo, David Bush, Jerry D Slater
PURPOSE: To investigate the long-term effects of vertebral-body-sparing proton craniospinal irradiation (CSI) on the spine of young patients with medulloblastoma. METHODS AND MATERIALS: Six children between the ages of 3 and 5 years with medulloblastoma were treated with vertebral-body-sparing proton CSI after maximal safe resection. Radiation therapy was delivered in the supine position with posterior beams targeting the craniospinal axis, and the proton beam was stopped anterior to the thecal sac...
April 2017: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/28740635/supratentorial-acute-subdural-haematoma-during-microvascular-decompression-surgery-report-of-three-cases
#6
Kenichi Amagasaki, Yutaka Takusagawa, Kyoko Kanehashi, Shoko Abe, Saiko Watanabe, Naoyuki Shono, Hiroshi Nakaguchi
Supratentoiral haemorrhage during posterior fossa surgery is very rare. Authors report three cases of acute subdural haematoma occurred during microvascular decompression (MVD). Bleeding was observed in the suboccipital surgical area during operation but the origin of the bleeding was not confirmed intraoperatively in all cases. Decompression procedure was completed and immediate postoperative computed tomography revealed supratentorial subdural haematoma. This complication was observed during MVD in healthy young patients with hemifacial spasm in our cases...
February 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28739568/posterior-meningeal-artery-dmso-injection-resulting-in-reproducible-asystole-prior-to-onyx-therapy-of-a-dural-arteriovenous-fistula-a-previously-undescribed-variant-of-the-trigeminocardiac-reflex-or-a-new-phenomenon
#7
Matthew Thomas Crockett, Anthony Ernest Robinson, Harmeet Aneja, Timothy John Phillips
We describe a case of reproducible asystole during endovascular treatment of a posterior fossa dural arteriovenous fistula. Catheterisation of the posterior meningeal artery, a branch of the vertebral artery in this patient, followed by dimethyl sulfoxide injection prior to Onyx administration resulted in two episodes of asystole.To the best of our knowledge, this is the first reported case of asystole occurring during endovascular intervention in the posterior meningeal artery. This may represent a previously undescribed variant of the trigemino-cardiac reflex (TGCR) caused by chemical stimulation of small areas of trigeminally innervated posterior fossa dura...
July 24, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28739517/novel-use-of-the-leksell-gamma-frame-for-stereotactic-biopsy-of-posterior-fossa-lesions-technical-note
#8
Shiro Horisawa, Hiroshi Nakano, Takakzu Kawamata, Takaomi Taira
BACKGROUND: Stereotactic transcerebellar biopsies of brainstem tumors have often been reported. The Leksell frame or Cosman-Roberts-Wells frame is often used in transcerebellar approaches. However, to access lesions via the cerebellum, these frames should be secured as inferiorly on the cranium as possible, which can require exaggerated neck flexion and limit the flexible trajectory to the target. To overcome these disadvantages, we have devised a new way to use the Leksell frame for transcerebellar approaches...
July 21, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28735870/evaluation-of-the-fetal-cerebellum-by-magnetic-resonance-imaging
#9
R Llorens Salvador, A Viegas Sainz, A Montoya Filardi, G Montoliu Fornas, F Menor Serrano
Obstetric protocols dictate that the fetal cerebellum should always be assessed during sonograms during pregnancy. For various reasons, including technical limitations or inconclusive sonographic findings, suspicion of cerebellar abnormalities is one of the most common indications for prenatal magnetic resonance imaging (MRI). Although sonography is the imaging technique of choice to assess the cerebellum, MRI shows the anatomy of the posterior fossa and abnormalities in the development of the fetal cerebellum in greater detail and thus enables a more accurate prenatal diagnosis...
July 20, 2017: Radiología
https://www.readbyqxmd.com/read/28735123/surgery-for-cerebellar-hemorrhage-a-nsqip-database-analysis-of-patient-outcomes-and-factors-associated-with-30-day-mortality-and-prolonged-ventilation
#10
Gregory D Arnone, Darian R Esfahani, Matt Wonais, Prateek Kumar, Justin K Scheer, Ali Alaraj, Sepideh Amin-Hanjani, Fady T Charbel, Ankit I Mehta
OBJECTIVE: Primary cerebellar hemorrhage accounts for 10% of all intracranial hemorrhages. Given the confined space of the posterior fossa, cerebellar hemorrhage management sometimes necessitates suboccipital decompression and hematoma evacuation. In this study, we examine outcomes following surgery for primary cerebellar hemorrhage, and identify risk factors associated with adverse outcomes. METHODS: A retrospective review of the 2005-2014 ACS-NSQIP database was performed, with CPT Code 61315 (suboccipital craniectomy or craniotomy for evacuation of cerebellar hemorrhage) queried between 2005 and 2014...
July 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28733933/immunohistochemical-analysis-of-h3k27me3-demonstrates-global-reduction-in-group-a-childhood-posterior-fossa-ependymoma-and-is-a-powerful-predictor-of-outcome
#11
Pooja Panwalkar, Jonathan Clark, Vijay Ramaswamy, Debra Hawes, Fusheng Yang, Christopher Dunham, Stephen Yip, Juliette Hukin, Yilun Sun, Matthew J Schipper, Lukas Chavez, Ashley Margol, Melike Pekmezci, Chan Chung, Adam Banda, Jill M Bayliss, Sarah J Curry, Mariarita Santi, Fausto J Rodriguez, Matija Snuderl, Matthias A Karajannis, Amanda M Saratsis, Craig M Horbinski, Anne-Sophie Carret, Beverly Wilson, Donna Johnston, Lucie Lafay-Cousin, Shayna Zelcer, David Eisenstat, Marianna Silva, Katrin Scheinemann, Nada Jabado, P Daniel McNeely, Marcel Kool, Stefan M Pfister, Michael D Taylor, Cynthia Hawkins, Andrey Korshunov, Alexander R Judkins, Sriram Venneti
Posterior fossa ependymomas (EPN_PF) in children comprise two morphologically identical, but biologically distinct tumor entities. Group-A (EPN_PFA) tumors have a poor prognosis and require intensive therapy. In contrast, group-B tumors (EPN_PFB) exhibit excellent prognosis and the current consensus opinion recommends future clinical trials to test the possibility of treatment de-escalation in these patients. Therefore, distinguishing these two tumor subtypes is critical. EPN_PFA and EPN_PFB can be distinguished based on DNA methylation signatures, but these assays are not routinely available...
July 21, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28731919/a-case-presentation-rare-occurrence-of-an-adolescent-male-presenting-with-an-atrt-and-simultaneous-low-grade-glioneuronal-tumor
#12
Matthew Cascio, Marie Rivera-Zengotita, John Fort
Atypical rhabdoid/teratoid tumor (ATRT) is an uncommon and highly malignant tumor of the central nervous system. The majority of ATRT tumors occur in infancy and young children located in the posterior fossa. The ideal treatment for cure remains controversial and prognosis is typically unfavorable. We present a case of an atypical presentation of ATRT, presenting in adolescence with an additional low-grade glioneuronal tumor discovered at diagnosis.
July 20, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28718255/dural-tears-in-patients-with-depressed-skull-fractures
#13
Gul Muhammad, Ahsan Aurangzeb, Shahbaz Ali Khan, Iqbal Hussain, Sudhair Alam, Ehtisham Ahmed Khan Afridi, Baynazir Khan, Sajid Nazir Bhatti
BACKGROUND: The presence of skull fracture in patients sustaining traumatic brain injury is an important risk factor for intracranial lesions. Assessment of integrity of dura in depressed skull fracture is of paramount importance because if dura is torn, lacerated brain matter may be present in the wound which needs proper debridement followed by water tight dural closure to prevent meningitis, cerebral abscess, and pseudomeningocoele formation. The objective of this study was to determine the frequency of dural tear in patients with depressed skull fractures...
April 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28713626/recurrent-hemorrhage-in-hemangioblastoma-involving-the-posterior-fossa-case-report
#14
Eric Marvin, Asad S Akhter, Jeroen R Coppens
BACKGROUND: Hemangioblastomas (HGBs) are the most common primary intra-axial posterior fossa tumor in adults. Although spontaneous hemorrhage of these tumors is exceedingly rare, despite their vascular nature, we describe a case of recurrent hemorrhage with associated tonsillar herniation, and demonstrate that a surgical approach can provide a suitable outcome. CASE DESCRIPTION: A 54-year-old female with von Hippel-Lindau (VHL) syndrome presented with acute loss of consciousness and Glasgow Coma Scale (GCS) was 4...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28708647/pneumocephalus-induced-oculomotor-nerve-palsy-after-atlanto-occipital-decompression-with-dural-plasty
#15
Yunfeng Han, Jianjun Sun, Zhenyu Wang
BACKGROUND: Pneumocephalus after posterior fossa craniotomy is very common. However, cranial nerve dysfunction secondary to pneumocephalus is a very rare phenomenon. PATIENT PRESENTATION: This case reports a patient who suffers from Chiari I malformation with syringomyelia in cervical spinal cord and develops unilateral oculomotor nerve palsy after atlanto-occipital decompression with dural plasty. CONCLUSIONS: Cranial nerve dysfunction caused by pneumocephalus after craniotomy is rare and easily misdiagnosed...
July 13, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28693694/trigeminal-ganglioneuroma-in-the-middle-posterior-cranial-fossa-a-case-report-%C3%A2
#16
Wang Ting, Ma Lin, Lou Xin, Bu Bo
No abstract text is available yet for this article.
June 10, 2017: Chinese Medical Sciences Journal, Chung-kuo i Hsüeh K'o Hsüeh Tsa Chih
https://www.readbyqxmd.com/read/28693072/-comparison-of-posterior-fossa-decompression-with-and-without-duraplasty-for-surgical-management-for-adult-chiari-malformation-type-%C3%A2
#17
H Y Li, Y M Li, H Chen, Y Li, X W Shi
Objective: To evaluate and compare the efficacy between posterior fossa decompression without duraplasty (PFD) and posterior fossa decompression with duraplasty (PFDD) in the surgical management for adult Chiari Ⅰ malformation. Methods: Fifty-seven patients suffered from Chiari malformation type Ⅰ were treated in Department of Neurosurgery, Henan Provincial People's Hospital from August 2008 to October 2013. Twenty-three patients received posterior fossa decompression without duraplasty and the other 34 patients received posterior fossa decompression with duraplasty...
July 4, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28692501/modified-medial-ramus-retractor-to-facilitate-horizontal-osteotomy-during-sagittal-split-ramus-osteotomy-procedure
#18
Praveen Ganesh, Muralidhara Nagarjuna, Kiran Kumar Boyina
Introducing a horizontal osteotomy is the first and a critical step in sagittal split ramus osteotomy procedure. Identification of the lingula and medial displacement of the vital structures entering the inferior alveolar foramen are of paramount importance in ensuring a risk-free placement of the medial cut with bur or a saw. Quite often, identification of lingula and retrolingular fossa can be an arduous task owing to the thickness of the internal oblique ridge. Hence, placement of horizontal osteotomy depends on the experience of the operator...
July 7, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28690908/primary-occipital-ewing-s-sarcoma-with-subsequent-spinal-seeding
#19
Ali Alqahtani, Roaa Amer, Eman Bakhsh
Ewing's sarcoma is a primary bone cancer that mainly affects the long bones. This malignancy is particularly common in pediatric patients. Primary cranial involvement accounts for 1% of cases, with occipital involvement considered extremely rare. In this case study, primary occipital Ewing's sarcoma with a posterior fossa mass and subsequent relapse resulting in spinal seeding is reported. A 3-year-old patient presented with a 1-year history of left-sided headaches, localized over the occipital bone with progressive torticollis...
2017: Case Reports in Pediatrics
https://www.readbyqxmd.com/read/28690897/a-case-of-multiple-myeloma-presenting-with-diabetes-insipidus
#20
Rudrajit Paul, Aditya V Ruia, Asim Saha, Jayati Mondal, T J Sau, Indranil Thakur, Kunal Haldar
Multiple myeloma (MM) can present with involvement of the central nervous system in the form of nerve palsy, plasma cell masses or, rarely, with endocrinological effects due to involvement of the pituitary gland. Usually, in such cases, the disease has a rapid progression and poor prognosis. We report a 52-year-old man who was admitted to the Kolkata Medical College, Kolkata, India, in 2016 with a prolonged low-grade fever and hypernatremia. Shortly afterwards, the patient began to complain of increased urinary frequency and drowsiness...
May 2017: Sultan Qaboos University Medical Journal
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