title: Sonography for diagnosis of benign and malignant tumors of the nose and paranasal sinuses.
abstract: OBJECTIVE
  The purpose of this study was to demonstrate the reliability of sonography for diagnosis of nose and paranasal sinus tumors.
  
  
  METHODS
  Ninety-six consecutive patients with tumors underwent sonography and computed tomography (CT) before surgical treatment. Tumor detectability and imaging findings were evaluated independently and then compared with pathologic findings.
  
  
  RESULTS
  Of 96 tumors, 75 were detected by sonography, for a detectability rate of 78.1%; 93 tumors were detected by CT, for a detectability rate of 96.9%. By comparison, sonography showed a trend toward higher detectability of nasal vestibular tumors than CT (87.5% for sonography versus 50.0% for CT) and small lumps on the wing of the nose (78.8% for sonography versus 33.3% for CT). Among the sonographic features, boundary, shape, internal echo, calcification, bone invasion, vascular pattern, and cervical lymph node metastasis all had significantly positive correlations with malignancy (P < .05), but size did not (P = .324). In addition, the vascular resistive index for malignant tumors was significantly higher (mean ± SD, 0.66 ± 0.20) than the index for benign lesions (0.24 ± 0.30; P < .001). Moreover, the detection rate for grade 1-3 (small-large) blood flow in benign lesions was only 43.8%, whereas the rate for malignant tumors was 97.7% (P < .001).
  
  
  CONCLUSIONS
  The vascular pattern may be a promising predictive indicator for distinguishing benign and malignant tumors of the nose and paranasal sinuses. Consequently, sonography has high value for diagnosis of benign and malignant tumors of the nose and paranasal sinuses, especially for nasal vestibular tumors and small lumps on the wing of the nose.
authors.affiliation: Department of Diagnostic Ultrasound, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China.
authors.forename: Jun-jie
authors.initials: JJ
authors.lastname: Liu
authors.affiliation: Department of Diagnostic Ultrasound, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Gao
authors.affiliation: Department of Diagnostic Ultrasound, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China.
authors.forename: Ya-Fei
authors.initials: YF
authors.lastname: Wu
authors.affiliation: Department of Diagnostic Ultrasound, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China. zhushangyongdyx@163.com.
authors.forename: Shang-Yong
authors.initials: SY
authors.lastname: Zhu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009666:Nose / Q000000981:diagnostic imaging; D009669:Nose Neoplasms / Q000000981:diagnostic imaging*; D010255:Paranasal Sinus Neoplasms / Q000000981:diagnostic imaging*; D010256:Paranasal Sinuses / Q000000981:diagnostic imaging; D015203:Reproducibility of Results; D014463:Ultrasonography; D055815:Young Adult
keywords: benign and malignant tumors; computed tomography; nose and paranasal sinuses; sonography