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Angiofibroma juvenil

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https://www.readbyqxmd.com/read/28740564/can-diffusion-weighted-imaging-aid-in-differentiating-benign-from-malignant-sinonasal-masses-a-useful-adjunct
#1
Abanti Das, Ashu S Bhalla, Raju Sharma, Atin Kumar, Alok Thakar, Sreenivas M Vishnubhatla, Mehar C Sharma, Suresh C Sharma
BACKGROUND: To evaluate the role of diffusion weighted imaging (DWI) and apparent diffusion coefficient (ADC) values at 3 Tesla in characterizing sinonasal masses. MATERIAL/METHODS: After ethical clearance, 79 treatment naive patients with head and neck masses underwent magnetic resonance imaging (MRI), including DWI at 3 Tesla using the following b values - 0, 500 and 1000 s/mm(2). Thirty-one patients were found to have sinonasal tumours and were subsequently analysed...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28707818/inhibition-of-fibroblast-growth-factor-receptor-with-azd4547-mitigates-juvenile-nasopharyngeal-angiofibroma
#2
Tran Le, Jacob New, Joel W Jones, Shireen Usman, Sreeya Yalamanchali, Ossama Tawfik, Larry Hoover, Dan E Bruegger, Sufi Mary Thomas
BACKGROUND: Juvenile nasopharyngeal angiofibroma (JNA) is a benign tumor that presents in adolescent males. Although surgical excision is the mainstay of treatment, recurrences complicate treatment. There is a need to develop less invasive approaches for management. JNA tumors are composed of fibroblasts and vascular endothelial cells. We identified fibroblast growth factor receptor (FGFR) and vascular endothelial growth factor (VEGF) expression in JNA-derived fibroblasts. FGFR influences fibroblast proliferation and VEGF is necessary for angiogenesis...
July 14, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28683841/variable-expression-of-molecular-markers-in-juvenile-nasopharyngeal-angiofibroma
#3
A Mishra, A Pandey, S C Mishra
BACKGROUND: Molecular categorisation may explain the wide variation in the clinical characteristics of juvenile nasopharyngeal angiofibroma. METHODS: Variations in molecular markers in juvenile nasopharyngeal angiofibroma in an Indian population were investigated and compared with global reports. RESULTS: Variable molecular marker expression was demonstrated at the regional and global levels. A wide variation in molecular characteristics is evident...
July 7, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28632604/reassessing-the-anatomic-origin-of-the-juvenile-nasopharyngeal-angiofibroma
#4
Colin D McKnight, Hemant A Parmar, Kuanwong Watcharotone, Suresh K Mukherji
OBJECTIVE: A modern imaging review is necessary to further define the anatomic origin of the juvenile nasopharyngeal angiofibroma. METHODS: After institutional review board approval, a search from January 1998 to January 2013 yielded 33 male patients (aged 10-23 years) with pathologically proven juvenile nasopharyngeal angiofibroma lesions, as well as pretreatment computed tomography/magnetic resonance imaging. Juvenile nasopharyngeal angiofibroma involvement was assessed in the following regions: sphenopalatine foramen, pterygopalatine fossa, vidian canal, nasopharynx, nasal cavity, sphenoid sinus, choana, pterygomaxillary fissure/masticator space, orbit, and sphenoid bone...
July 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28631685/-the-transperygoid-approach-to-the-removal-of-a-recurrent-juvenile-angiofibroma-at-the-base-of-the-skull-without-preoperative-embolization
#5
N S Grachev, I N Vorozhtsov
The authors report a clinical case of successful elimination of a recurrent juvenile angiofibroma at the base of the skull (JAFBS) with the application of the optical navigation system and a cold plasma scalpel in the absence of preoperative embolization. It has been demonstrated using the proposed transperygoid approach to the extirpation of the tumour that a recurrent juvenile angiofibroma at the base of the skull can be efficiently removed by means of a modern minimally invasive and at the same time radical surgical method...
2017: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/28571176/juvenile-nasopharyngeal-angiofibroma-a-case-report
#6
Soubhagini Acharya, Choubarga Naik, Siddharth Panditray, Subha Soumya Dany
Juvenile nasopharyngeal angiofibroma is tumour almost exclusively seen in adolescent males, constituting less than 1% of all neoplasms in head and neck. They are benign and locally spreading and are highly vascular in nature and thus prove to be a surgical challenge because of its complex anatomical location. Here, we present a case report of a 18-year-old male presenting with a mass in his left nasal cavity, with recurrent epistaxis and nasal obstruction. Computed tomography imaging revealed a non-encapsulated lobulated heterogeneous mass lesion in the naso-pharynx and left posterior choana of the nasal cavity, extending to pterygopalatine and infratemporal fossa, masseter space of left side...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28540121/comprehensive-preoperative-staging-system-for-endoscopic-single-and-multicorridor-approaches-to-juvenile-nasal-angiofibromas
#7
Trichy N Janakiram, Shilpee B Sharma, Ekkehard Kasper, Onkar Deshmukh, Iype Cherian
BACKGROUND: Juvenile nasal angiofibromas (JNA) is a benign lesion with high vascularity and propensity of bone erosion leading to skull base invasion and intracranial extension. It is known to involve multiple compartments, which are often surgically difficult to access. With evolution in surgical expertise and technical innovations, endoscopic and endoscopic-assisted management has become the preferred choice of surgical management. Over the last four decades, various staging systems have been proposed, which are largely based on the extent of nasal angiofibroma...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28324181/trigeminocardiac-reflex-during-endoscopic-juvenile-nasopharyngeal-angiofibroma-surgery-an-appraisal
#8
Shilpee Bhatia Sharma, Trichy Narayanan Janakiram, Hina Baxi, Balamurugan Chinnasamy
Juvenile nasopharyngeal angiofibroma is a locally aggressive benign tumour which has propensity to erode the skull base. The tumour spreads along the pathways of least resistance and is in close proximity to the extracranial part of trigeminal nerve. Advancements in expanded approaches for endoscopic excision of tumours in infratemporal fossa and pterygopalatine fossa increase the vulnerability for the trigeminocardiac reflex. The manipulation of nerve and its branches during tumour dissection can lead to sensory stimulation and thus inciting the reflex...
March 21, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28286392/complications-of-midface-swing-for-management-of-juvenile-nasopharyngeal-angiofibroma
#9
Sanjay Roy Chowdhury, K Rajkumar, Tushar Deshmukh
INTRODUCTION: Access osteotomies provide direct exposure to inaccessible areas of the deep part of craniofacial skeleton for treating pathologies involving vital structures. The use of maxillary swing approach for gaining wide access to the nasopharynx, infratemporal fossa, parapharyngeal space, middle fossa of skull base. Though the maxillary swing requires transfacial incision for wide exposure but with careful handling the scar is minimum and this approach can be used in young people...
March 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28274071/extra-nasopharyngeal-angiofibroma-simulating-a-mucocele-a-new-location-for-the-rare-entity
#10
Srikanth Goud, Tipirisety Swapna, Hima Bindu, Sanjeeva Reddy Gari Shylaja
Angiofibromas are rare, benign, but locally aggressive vascular tumours which account for 0.05-0.5% of all head and neck neoplasms. The common variant of angiofibromas of head and neck region is Juvenile Nasopharyngeal Angiofibroma (JNAF) which is well published in the literature. Incidence of Extranasopharygeal Angiofibromas (ENAF) is relatively rare and most of the published literature favours maxillary sinus as the most common site. We report a rare clinical entity of ENAF involving the upper lip which is first of its kind in the light of literature review owing to its anatomical location...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28247232/update-from-the-4th-edition-of-the-world-health-organization-classification-of-head-and-neck-tumours-nasopharynx
#11
Edward B Stelow, Bruce M Wenig
The current WHO classification system for tumors of the head and neck has made few changes from the previous edition with regards to tumors of the nasopharynx. The classification system is discussed here with particular attention to nasopharyngeal carcinoma, nasopharyngeal papillary adenocarcinoma, salivary gland anlage tumor, hairy polyp, juvenile angiofibroma, and other tumors.
March 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28239585/imaging-in-juvenile-nasopharyngeal-angiofibroma-clinical-significance-of-ramharan-and-chopstick-sign
#12
Trichy Narayanan Janakiram, Shilpee Bhatia Sharma, Udaya Chanukya Samavedam, Onkar Deshmukh, Bavaharan Rajalingam
Imaging plays an important role in the diagnosis, staging and prognosis of JNA. Certain radiological changes as seen on CECT were observed to be consistent in our case series. This study analysed preoperative and postoperative CECT of large series of JNA patients to evaluate the sites and pattern of spread of tumor. We evaluated the clinical significance of pterygoid wedge in preoperative and postoperative imaging and thus elucidating two new radiological signs. Retrospective analysis of the pre operative and post operative imaging data of 242 patients with JNA...
March 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28239582/juvenile-perinasal-angiofibroma
#13
Anupam Mishra, Veerendra Verma, Subhash Chandra Mishra
The extranasopharyngeal angiofibroma is a separate clinical entity but those involving infratemporal fossa and cheek resemble juvenile nasopharyngeal angiofibroma (JNA) and hence have been labelled as juvenile perinasal angiofibroma (JPA) in this paper. This paper presents a 7th case of JPA and attempts to review the world literature on JPA, along with a proposal of staging the disease. A 16 year male presented with a painless compressible facial swelling since 7 months without any epistaxis or nasal obstruction...
March 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28199045/nasal-juvenile-angiofibroma-current-perspectives-with-emphasis-on-management
#14
Fernando López, Asterios Triantafyllou, Carl H Snyderman, Jennifer L Hunt, Carlos Suárez, Valerie J Lund, Primož Strojan, Nabil F Saba, Iain J Nixon, Kenneth O Devaney, Isam Alobid, Manuel Bernal-Sprekelsen, Ehab Y Hanna, Alessandra Rinaldo, Alfio Ferlito
Juvenile angiofibroma is an uncommon, benign, locally aggressive vascular tumor. It is found almost exclusively in young men. Common presenting symptoms include nasal obstruction and epistaxis. More advanced tumors may present with facial swelling and visual or neurological disturbances. The evaluation of patients with juvenile angiofibroma relies on diagnostic imaging. Preoperative biopsy is not recommended. The mainstay of treatment is resection combined with preoperative embolization. Endoscopic surgery is the approach of choice in early stages, whereas, in advanced stages, open or endoscopic approaches are feasible in expert hands...
May 2017: Head & Neck
https://www.readbyqxmd.com/read/28180045/juvenile-nasal-angiofibromas-a-comparison-of-modern-staging-systems-in-an-endoscopic-era
#15
Nicholas R Rowan, Nathan T Zwagerman, Molly E Heft-Neal, Paul A Gardner, Carl H Snyderman
Objectives To compare the clinical utility of four juvenile nasal angiofibroma (JNA) staging systems in a large cohort of patients. Design Retrospective case series. Setting Tertiary referral academic center. Participants Pediatric patients undergoing surgical resection of JNAs between January 2008 and June 2015. Main Outcome Measures Intraoperative blood loss and transfusions, number of staged operations, postoperative residual disease, and recurrent disease. Results In total, 34 patients were identified; all underwent preoperative embolization followed by surgery...
February 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/27833886/a-drastic-aftermath-of-embolisation-in-juvenile-nasopharyngeal-angiofibroma
#16
Narayanan Janakiram, Shilpee Bhatia Sharma, Vidya Bhargavan Panicker, C V Srinivas
The role of preoperative embolization in alleviating intra operative haemorrhage in small to medium sized JNA is dubious. We report an unusual case of JNA who developed cerebral edema, hemiplegia and aphasia following glue embolisation and underwent frontotemporal craniectomy. This drastic aftermath of embolisation challenges the safety of preoperative embolisation in such lesions.
December 2016: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/27752379/juvenile-nasopharyngeal-angiofibroma-presenting-with-acute-airway-obstruction
#17
Chikoti Wheat, Ryan J Bickley, Erik Cohen, Danya Wenzler, Nancy Hunter, Donna Astiz
We describe a case of a 24-year-old male presenting urgently with a juvenile nasopharyngeal angiofibroma (JNA) with difficulty breathing, inability to swallow, and respiratory distress following throat swelling. The swelling was reduced with administration of dexamethasone and the JNA was surgically resected within 48 hours. This presentation was atypical given the acuity of presentation and the patient's older age.
2016: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/27601836/juvenile-nasopharyngeal-angiofibroma
#18
Jashika Adil Shroff Makhasana, Meena A Kulkarni, Suhas Vaze, Adil Sarosh Shroff
Juvenile nasopharyngeal angiofibroma (JNA) is a rare benign tumor arising predominantly in the nasopharynx of adolescent males. It is an aggressive neoplasm and shows a propensity for destructive local spread often extending to the base of the skull and into the cranium. Clinically, however, it is obscure with painless, progressive unilateral nasal obstruction being the common presenting symptom with or without epistaxis and rhinorrhea. Diagnosis of JNA is made by complete history, clinical examination, radiography, nasal endoscopy and by using specialized imaging techniques such as arteriography, computer tomography and magnetic resonance imaging...
May 2016: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/27577998/current-molecular-profile-of-juvenile-nasopharyngeal-angiofibroma-first-comprehensive-study-from-india
#19
Praveen Pandey, Anupam Mishra, Ashoak Mani Tripathi, Veerendra Verma, Ritu Trivedi, Hitendra Prakash Singh, Sunil Kumar, Brijesh Patel, Vinay Singh, Shivani Pandey, Amita Pandey, Subhash Chandra Mishra
OBJECTIVE: An attempt is made to analyze the molecular behavior of juvenile nasopharyngeal angiofibroma (JNA). STUDY DESIGN: Case Series METHODS: Quantification of mRNAs expression was undertaken through real-time polymerase chain reaction in JNA (9-24) samples for VEGF-A, basic fibroblast growth factor (b-FGF), platelet-derived growth factor PDGF-A, KIT proto-oncogene receptor tyrosine kinase (c-Kit), Avian myelomatosis viral oncogene homolog (c-Myc), Harvey rat sarcoma viral oncogene homolog (H-Ras), tumor suppressor gene TP53, and androgen receptor and interleukin 6 (IL-6)...
March 2017: Laryngoscope
https://www.readbyqxmd.com/read/27572281/current-status-and-clinical-association-of-beta-catenin-with-juvenile-nasopharyngeal-angiofibroma
#20
A Mishra, V Singh, V Verma, S Pandey, R Trivedi, H P Singh, S Kumar, R C Dwivedi, S C Mishra
OBJECTIVE: A possible role of the APC/beta-catenin pathway in the pathogenesis of sporadic juvenile nasopharyngeal angiofibroma has been suggested. This paper presents its current status and clinical association in our patients. METHOD: A prospective observational study was conducted at King George Medical University and Central Drug Research Institute, in Lucknow, India. Western blot analysis was undertaken in 16 cases to examine beta-catenin expression. The clinical details were recorded along with follow up observations, to determine associations...
October 2016: Journal of Laryngology and Otology
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