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Juvenile Nasopharyngeal Angiofibroma: Magnetic Resonance Imaging Findings

Juvenile Nasopharyngeal Angiofibroma: Magnetic Resonance Imaging Findings

Authors :
Ayse Gul Alimli
Murat Ucar
Cigdem Oztunali
Koray Akkan
Oznur Boyunaga
Cagri Damar
Betül Derinkuyu
Nil Tokgöz
Source :
Journal of the Belgian Society of Radiology, Vol 100, Iss 1 (2016)
Publication Year :
2016
Publisher :
Ubiquity Press, 2016.

Abstract

Purpose: Juvenile nasopharyngeal angiofibroma (JNA) is a rare tumor that exhibits a predictable spreading pattern. Radiologist’s prior knowledge on the tumor’s characteristics aids in establishing a diagnosis. We aimed to report the characteristic Magnetic Resonance Imaging (MRI) findings and the spread patterns of JNA. Materials and methods: We retrospectively evaluated the MRI findings and extension pathways of 6 cases of JNA. Results: The patients’ age ranged from 8 to 16 years and all patients were male. The tumors were classified according to the Onerci system. Tumors were largely isointense to muscle on T1-weighted images and hyperintense on T2-weighted images. All lesions had internal signal-void regions and all exhibited intense enhancement after IV contrast injection. Diffusion restriction was not an associated feature. ADC values for these tumors were high. The evaluation of the available MR angiography studies of three patients showed the blood supply to the tumor to be mainly from the internal maxillary branch of the external carotid artery. In all patients, the diagnosis was based on MR images and a surgical excision was planned. Conclusion: The diagnosis can be established based on the characteristic imaging findings and the clinical history without performing a biopsy.

Details

Language :
English
ISSN :
25148281
Volume :
100
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Journal of the Belgian Society of Radiology
Publication Type :
Academic Journal
Accession number :
edsdoj.85bc83388c24e0f96c71c31ff44f2bf
Document Type :
article
Full Text :
https://doi.org/10.5334/jbr-btr.1090