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https://www.readbyqxmd.com/read/27909626/metastasis-of-prostate-adenocarcinoma-to-the-frontal-and-ethmoid-sinus
#1
Fatih Akdemir, Mustafa Aldemir, Hasan Çakar, Gülnur Güler
Intracranial metastasis of prostate cancer is rarely seen, and there are few studies in this regard in the literature. Most of these studies in the literature comprise the metastasis of prostate cancer to the sphenoid sinus, and metastasis to the frontal and ethmoid sinus is a much rare entity. Association of visual symptoms, epistaxis, headache, and hematuria may indicate a urologic malignancy in terms of the origin of the primary tumor. This study was aimed to present the prostate cancer case of a 73-year-old patient whose paranasal sinus tomograms revealed the presence of frontal and ethmoid sinus metastasis...
December 2016: Turkish Journal of Urology
https://www.readbyqxmd.com/read/27908938/a-rare-case-of-extensive-cranial-langerhans-cell-histiocytosis-synchronously-presenting-as-otitis-externa-and-giant-cell-arteritis
#2
Adnan Darr, Zahir Mughal, Thomas Martin
Langerhans cell histiocytosis (LCH) is a rare histiocytic disorder of unpredictable clinical course and varied modes of presentation. The spectrum of presentation is wide, ranging from isolated eosinophilic granulomas to multiple lesions and diffuse systemic involvement. We present the case of a 52-year-old man, who presented with an 8-week history of worsening otalgia and superficial temporal tenderness attributed to otitis externa within the community and subsequently giant cell arteritis. Computed tomography and magnetic resonance imaging were undertaken due to atypical features, which demonstrated bony destruction within the right greater wing of the sphenoid, squamous part of temporal and mastoid bone, with middle cranial fossa communication...
December 1, 2016: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/27908187/dosimetric-characterization-of-mri-only-treatment-planning-for-brain-tumors-in-atlas-based-pseudo-ct-images-generated-from-standard-t1-weighted-mr-images
#3
Benjamin Demol, Christine Boydev, Juha Korhonen, Nick Reynaert
PURPOSE: Magnetic resonance imaging (MRI)-only radiotherapy treatment planning requires accurate pseudo-CT (pCT) images for precise dose calculation. The current work introduced an atlas-based method combined with MR intensity information. pCT analyses and Monte Carlo dose calculations for intracranial stereotactic treatments were performed. METHODS: Twenty-two patients, representing 35 tumor targets, were scanned using a 3D T1-weighted MRI sequence according to the clinical protocol...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27906848/calculation-of-an-optic-nerve-injury-risk-profile-before-sphenoid-sinus-surgery
#4
Erdem Atalay Cetinkaya, Koray Koc, Mehmet Fatih Kucuk, Pinar Koc, Nuray Bayar Muluk, Cemal Cingi
OBJECTIVES: Our objective was to analyze variations in the optic nerve (ON) course and surrounding structures in an effort to construct an optic nerve injury risk profile before endoscopic intranasal sphenoidal, or endoscopic endonasal transphenoidal, skull-base surgery, and eventually to construct and formulate a common classification by combining the known classes. The authors used computed tomography (CT) toward this end. METHODS: The authors retrospectively reviewed 200 consecutive CT scans (400 sides) of the paranasal sinuses...
November 30, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27905167/preoperative-surgical-simulation-and-validation-of-the-line-of-resection-in-anterolateral-craniofacial-resection-of-advanced-sinonasal-sinus-carcinoma
#5
Naoki Nishio, Masazumi Fujii, Yuichiro Hayashi, Mariko Hiramatsu, Takashi Maruo, Kenichiro Iwami, Yuzuru Kamei, Shunjiro Yagi, Keisuke Takanari, Yasushi Fujimoto
BACKGROUND: The purpose of this study was to assess the usefulness and accuracy of preoperative 3D virtual simulation of anterolateral craniofacial resection in cases of advanced sinonasal sinus carcinoma. METHODS: Seven patients with advanced (T4 classification) sinonasal sinus carcinoma who underwent anterolateral craniofacial resection in our hospital between 2011 and 2013 were included in this study. Postsimulation CT images were fused with postoperative CT images and differences between the planned and actual osteotomy were measured in 3 regions of the skull base...
December 1, 2016: Head & Neck
https://www.readbyqxmd.com/read/27899081/endoscopic-endonasal-pituitary-adenomas-surgery-the-surgical-experience-of-178-consecutive-patients-and-learning-curve-of-two-neurosurgeons
#6
Xuefei Shou, Ming Shen, Qilin Zhang, Yichao Zhang, Wenqiang He, Zengyi Ma, Yao Zhao, Shiqi Li, Yongfei Wang
BACKGROUND: We aim to study surgical technique and analyze the related factors affecting tumor total removal and postoperative endocrinological remission for endoscopic endonasal pituitary adenomas surgery. METHODS: We retrospectively analyzed 178 endoscopic endonasal pituitary adenomas surgery from March 2011 to May 2014. Endonasal approach included the routine transnasal-sphenoidal approach, transnasal- maxillary sinus approach in four cases and transnasal-clivus approach in one case...
November 30, 2016: BMC Neurology
https://www.readbyqxmd.com/read/27891396/endoscopic-excision-of-symptomatic-simple-bone-cyst-at-skull-base
#7
Prashant Gunawat, Salman Tehran Shaikh, Vikram Karmarkar, Chandrashekhar Deopujari, Nishit Shah
Seizure is a classical feature of intra axial brain parenchymal lesion. Simple bone cyst is an unusual bony pathology at skull base presenting with unexpected symptoms of complex partial seizures. Skull base neuro-endoscopy has managed such lesions more effectively with reduced post-operative morbidity as compared to transcranial approach. This case report discusses a 20-year-old male who presented with 3 episodes of seizure over a time period of 10 months. MRI brain revealed T1 hypo and T2 hyper intense cystic lesion in middle cranial fossa with no enhancement on contrast administration...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27890189/diplopia-what-to-double-check-in-radiographic-imaging-of-double-vision
#8
REVIEW
Claudia F E Kirsch, Karen Black
When patients see double with both eyes open, known as "binocular diplopia," this may be a harbinger of underlying life-threatening causes. This article presents pertinent anatomy, critical abnormality, and radiographic features that should be double checked for in diplopia. Key areas requiring a double check using the acronym VISION include Vascular, Infectious and Inflammatory, the Scalp for giant cell arteritis, Sphenoid and Skull base in trauma, Increased intracranial pressure (pseudotumor cerebri), Onset of new headaches or psychosis, and Neoplasm...
January 2017: Radiologic Clinics of North America
https://www.readbyqxmd.com/read/27890105/use-of-postmortem-computed-tomography-angiography-to-detect-vascular-injuries-accompanying-skull-base-fracture
#9
Hikaru Kuninaka, Yoichiro Takahashi, Rie Sano, Keiko Takahashi, Rieko Kubo, Yoshihiko Kominato, Hiroyuki Takei, Susumu Kobayashi, Takehiro Shimada, Hiroyuki Tokue, Sachiko Awata, Satoshi Hirasawa
A 58-year-old woman who had presented for upper gastrointestinal barium examination accidently slipped from the movable bed, and her head became compressed between the end of the bed and the side wall. She suffered massive bleeding from her nose and ear followed by cardiac arrest, and subsequent attempts at cardiopulmonary resuscitation failed. A medicolegal autopsy was performed to reveal the cause of death, as part of the investigation of the accident. During the autopsy, postmortem cerebral CT angiography was carried out by injection of 5% gelatin-barium emulsion as a radiopaque contrast medium into the bilateral common carotid arteries, demonstrating transudation of the contrast medium into the right acoustic meatus and the sphenoidal sinus cavity...
November 2016: Legal Medicine
https://www.readbyqxmd.com/read/27888912/extended-endoscopic-and-open-sinus-surgery-for-refractory-chronic-rhinosinusitis
#10
REVIEW
Jean Anderson Eloy, Emily Marchiano, Alejandro Vázquez
This review discusses extended endoscopic and open sinus surgery for refractory chronic rhinosinusitis. Extended maxillary sinus surgery including endoscopic maxillary mega-antrostomy, endoscopic modified medial maxillectomy, and inferior meatal antrostomy are described. Total/complete ethmoidectomy with mucosal stripping (nasalization) is discussed. Extended endoscopic sphenoid sinus procedures as well as their indications and potential risks are reviewed. Extended endoscopic frontal sinus procedures, such the modified Lothrop procedure, are described...
February 2017: Otolaryngologic Clinics of North America
https://www.readbyqxmd.com/read/27888649/prospective-multicenter-evaluation-of-balloon-sinus-dilation-for-treatment-of-pediatric-chronic-rhinosinusitis
#11
Zachary M Soler, Jeffrey S Rosenbloom, Douglas Skarada, Michael Gutman, Mark J Hoy, Shaun A Nguyen
BACKGROUND: Although balloon sinus dilation is a treatment option for adults with chronic rhinosinusitis (CRS), there have been few studies performed in pediatric patients. METHODS: This study was designed as a prospective, multicenter, single-arm investigation. Children (2 to 21 years old) with CRS who had failed medical management were treated with balloon sinus dilation and followed to 6 months postprocedure. RESULTS: Fifty children were treated at 4 centers; 33 participants were 2 to 12 years old (mean ± standard deviation age: 6...
November 26, 2016: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/27888078/basilar-artery-herniation-into-the-sphenoid-sinus-secondary-to-traumatic-skull-base-fractures-case-report-and-review-of-the-literature
#12
Arthur Wang, John Wainwright, Jared Cooper, Michael S Tenner, Adesh Tandon
BACKGROUND: Traumatic clival fractures occur with < 0.6% frequency and can be associated with significant neurovascular injuries. The most serious of these injuries is to the basilar artery in which the artery is dissected or is fully occluded resulting in infarction of the brainstem and cerebellum. Among early reports of these injuries, postmortem autopsy showed entrapment, or incarceration, of the basilar artery at the clival fracture site. A literature search revealed 11 cases of entrapment of the basilar artery within a clival fracture...
November 22, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27877057/chronic-sphenoid-rhinosinusitis-management-challenge
#13
REVIEW
Natamon Charakorn, Kornkiat Snidvongs
Chronic sphenoid rhinosinusitis is a spectrum of inflammatory diseases in isolated sphenoid sinus which may persist over a period of 12 weeks. It is a different entity from other types of rhinosinusitis because clinical presentations include headache, visual loss or diplopia, and patients may or may not have nasal obstruction or nasal discharge. Nasal endoscopic examination is useful, and computed tomography is mandatory. The disease requires comprehensive knowledge and appropriate imaging technique for diagnosis...
2016: Journal of Asthma and Allergy
https://www.readbyqxmd.com/read/27876186/randomized-trial-for-superiority-of-high-field-strength-intra-operative-magnetic-resonance-imaging-guided-resection-in-pituitary-surgery
#14
Vivek Tandon, Amol Raheja, Ashish Suri, P Sarat Chandra, Shashank S Kale, Rajinder Kumar, Ajay Garg, Mani Kalaivani, Ravindra M Pandey, Bhawani S Sharma
Till date there are no randomized trials to suggest the superiority of intra-operative magnetic resonance imaging (IOMRI) guided trans-sphenoidal pituitary resection over two dimensional fluoroscopic (2D-F) guided resections. We conducted this trial to establish the superiority of IOMRI in pituitary surgery. Primary objective was to compare extent of tumor resection between the two study arms. It was a prospective, randomized, outcome assessor and statistician blinded, two arm (A: IOMRI, n=25 and B: 2D-F, n=25), parallel group clinical trial...
November 18, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27876137/cathepsin-k-the-association-between-cathepsin-k-expression-and-sphenoid-sinus-invasion-of-pituitary-adenomas
#15
Hongyan Liu, Guoqi Wang, Weijun Gu, Yiming Mu
Pituitary adenomas with sphenoid sinus or clivus invasion are not uncommon, but the pathogenesis responsible for this phenomenon remains unclear. Cathepsin K, expressed predominantly in osteoclasts, can degrade type I collagen and plays an essential role in bone resorption. Recent studies reported the expression of Cathepsin K in various malignant tumors, such as bone, breast, lung and prostate cancers, and its expression is further increased in bone metastasis or invasive subpopulations. In addition, cathepsin K inhibitors (CatKi) were demonstrated to effectively prevent or reduce osteolytic lesions in breast cancers with bone metastasis...
December 2016: Medical Hypotheses
https://www.readbyqxmd.com/read/27873519/use-of-three-dimensional-curved-multiplanar-reconstruction-images-for-sylvian-dissection-in-microsurgery-of-middle-cerebral-artery-aneurysms
#16
Taek Kyun Nam, Yong Sook Park, Jun Soo Byun, Seung Won Park, Jeong Taik Kwon
PURPOSE: The purpose of this study was to introduce a method of using three-dimensional (3D) curved-multiplanar reconstruction (MPR) images for sylvian dissection during microsurgical treatment of middle cerebral artery (MCA) aneurysms. MATERIALS AND METHODS: Forty-nine patients who had undergone surgery for MCA aneurysms were enrolled. We obtained the 3D curved-MPR images along the sphenoid ridge using OsiriX MD™ imaging software, compared sylvian dissection time according to several 3D MPR image factors, and investigated the correlations between these images and intraoperative findings...
January 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/27869357/the-impact-of-endoscopic-sinus-surgery-on-paranasal-physiology-in-simulated-sinus-cavities
#17
Ravi Jain, Haribalan Kumar, Merryn Tawhai, Richard Douglas
BACKGROUND: Surgery improves symptoms for the majority of chronic rhinosinusitis (CRS) patients; however, physiological changes in the sinus cavities remain poorly characterized. Direct measurement of changes in airflow, pressure, temperature, humidity, and intranasal spray distribution following surgery is technically challenging. Accordingly, we have used computational fluid dynamic modeling to quantify how these parameters change postoperatively. METHODS: Computed tomography images from a normal control, a patient with CRS preoperatively and postoperatively, and a patient following an endoscopic Lothrop procedure (ELP) were used to create 4 three-dimensional models of the sinus cavities...
November 21, 2016: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/27863637/nasal-septal-abscess-in-association-with-pediatric-acute-rhinosinusitis
#18
REVIEW
Duc A Tien, Paul Krakovitz, Samantha Anne
INTRODUCTION: Nasal septal abscess (NSA) in the pediatric population is rare and can result in devastating complications. Objective of this study is to review a case series of pediatric patients presenting with NSA in association with acute rhinosinusitis (ARS) for possible risk factors and predisposing conditions. METHOD: This is a retrospective review of pediatric patients that presented to a tertiary care hospital with nasal septal abscess associated with ARS...
December 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27861333/isolated-neurosarcoidosis-mimicking-multifocal-meningiomas-a-diagnosis-pitfall-a-case-report
#19
Kun Wang, Xiaoying He, Wei Wang, Huanjiang Niu, Yirong Wang, Xiujun Cai, Shuxu Yang
INTRODUCTION: Neurosarcoidosis accounts for approximately 5% of the sarcoidosis, which develops exclusively in the nervous system and is always difficult to diagnose. We describe a rare case of isolated neurosarcoidosis mimicking as multifocal meningiomas. A 27-year-old male was admitted to our hospital with a history of unconsciousness and convulsion 1 month ago, which was suspected as a seizure. The results showed no abnormalities in complete blood count; serum electrolytes; erythrocyte sedimentation rate and ultrasonography of the liver, pancreas, spleen, kidney and parotid gland, and so on...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27859437/characteristics-and-outcome-of-surgically-treated-pituitary-tumours-in-south-africa-a-single-centre-experience
#20
Khaled K Elmezughi, Fraser J Pirie, Ayesha A Motala
AIMS: To describe the clinical, biochemical, radiological and histological features and to determine the outcome of all patients with pituitary tumours treated surgically at Inkosi Albert Luthuli Central Hospital in Durban over a 5 year period. RESEARCH DESIGN: Retrospective chart review from 2008 to 2012. Clinical, biochemical and radiologic data were collected before and one year after surgery. Histopathology findings and peri-operative complications were recorded...
November 12, 2016: Clinical Endocrinology
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