title: Characteristic power Doppler sonographic images of tumorous and non-tumorous buccal space lesions.
abstract: OBJECTIVE
  The aim of this study was to evaluate the characteristic power Doppler sonographic images of buccal space tumorous and non-tumorous lesions.
  
  
  METHODS
  48 patients with buccal space lesions were evaluated with greyscale sonography followed by power Doppler sonography with a 12 MHz linear transducer. On greyscale sonography, buccal space lesions were assessed for the boundary (clear or unclear), echogenicity (hypoechoic or isoechoic) and internal architecture (homogeneous or heterogeneous). Power Doppler sonography was performed to evaluate the vascular signals within the buccal space lesions.
  
  
  RESULTS
  48 lesions were found in the 48 patients; of these 48 lesions, 28 were tumourous and 20 were non-tumourous. In the 28 tumours, 15 cases showed clear boundaries, 15 cases were hypoechoic relative to adjacent tissues and 22 cases presented with a heterogeneous appearance on greyscale sonography. The internal vascularity of 19 tumours was shown using power Doppler sonography. In the 20 non-tumorous lesions, 11 cases showed clear boundaries, 17 cases were hypoechoic relative to adjacent tissues and 13 cases presented with a homogeneous appearance on greyscale sonography. 18 non-tumorous lesions showed no internal vascularity using power Doppler sonography. Logistic multivariate regression analysis between the tumour group and the non-tumorous lesions group demonstrated that the internal architecture (odds ratio = 8.270, p = 0.029) and vascular signals (odds ratio = 17.533, p = 0.003) were significant variables.
  
  
  CONCLUSIONS
  Power Doppler sonography is a useful technique for the differential diagnosis of tumorous and non-tumorous buccal space lesions.
authors.affiliation: Department of Radiology, Nihon University School of Dentistry at Matsudo, Chiba 271-8587, Japan. ogura.ichirou@nihon-u.ac.jp
authors.forename: I
authors.initials: I
authors.lastname: Ogura
authors.forename: T
authors.initials: T
authors.lastname: Kaneda
authors.forename: Y
authors.initials: Y
authors.lastname: Sasaki
authors.forename: K
authors.initials: K
authors.lastname: Sekiya
authors.forename: S
authors.initials: S
authors.lastname: Tokunaga
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001706:Biopsy; D002610:Cheek / Q000098:blood supply / Q000000981:diagnostic imaging*; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006097:Granulation Tissue / Q000000981:diagnostic imaging; D006099:Granuloma / Q000000981:diagnostic imaging; D006391:Hemangioma / Q000098:blood supply / Q000000981:diagnostic imaging; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008297:Male; D008875:Middle Aged; D009059:Mouth Diseases / Q000000981:diagnostic imaging*; D009062:Mouth Neoplasms / Q000098:blood supply / Q000000981:diagnostic imaging*; D009078:Mucocele / Q000000981:diagnostic imaging; D014159:Transducers; D018608:Ultrasonography, Doppler / Q000295:instrumentation / Q000379:methods*; D055815:Young Adult
keywords: buccal space; power Doppler sonography; ultrasonography