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J. Clin. Med. 2017, 6(12), 116; doi:10.3390/jcm6120116

Imaging Characteristics of Malignant Sinonasal Tumors

1
Department of Radiology, Gifu University School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan
2
Department of Tumor Pathology, Gifu University School of Medicine, Gifu 501-1194, Japan
3
Department of Otolaryngology, Gifu University School of Medicine, Gifu 501-1194, Japan
*
Authors to whom correspondence should be addressed.
Received: 30 October 2017 / Revised: 1 December 2017 / Accepted: 4 December 2017 / Published: 6 December 2017
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Abstract

Malignancies of the nasal cavity and paranasal sinuses account for 1% of all malignancies and 3% of malignancies of the upper aerodigestive tract. In the sinonasal tract, nearly half of all malignancies arise in the nasal cavity, whereas most of the remaining malignancies arise in the maxillary or ethmoid sinus. Squamous cell carcinoma is the most common histological subtype of malignant tumors occurring in this area, followed by other epithelial carcinomas, lymphomas, and malignant soft tissue tumors. Although many of these tumors present with nonspecific symptoms, each tumor exhibits characteristic imaging features. Although complex anatomy and various normal variants of the sinonasal tract cause difficulty in identifying the origin and extension of large sinonasal tumors, the invasion of vital structures such as the brain, optic nerves, and internal carotid artery affects patients’ prognosis. Thus, diagnostic imaging plays a key role in predicting the histological subtype and in evaluating a tumor extension into adjacent structures. This article describes the computed tomography and magnetic resonance imaging findings for malignant sinonasal tumors. View Full-Text
Keywords: sinonasal tract; malignant tumor; CT; MRI sinonasal tract; malignant tumor; CT; MRI
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kawaguchi, M.; Kato, H.; Tomita, H.; Mizuta, K.; Aoki, M.; Hara, A.; Matsuo, M. Imaging Characteristics of Malignant Sinonasal Tumors. J. Clin. Med. 2017, 6, 116.

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