title: Head and neck MRI of Kimura disease.
abstract: OBJECTIVE
  The purpose of our study was to describe the MR appearance of Kimura disease and to interpret the differences in appearance from malignant parotid gland tumours.
  
  
  METHODS
  MR studies of seven patients with Kimura disease were reviewed. The MR studies included T(1) weighted, T(2) weighted, short tau inversion-recovery, diffusion-weighted (DW) and dynamic contrast-enhanced imaging.
  
  
  RESULTS
  Typical Kimura disease featured subcutaneous lesions, continuously infiltrated parotid lesions from the subcutaneous lesions with or without intraparotid lymphadenopathies, and reactive cervical lymphadenopathies. The subcutaneous lesions showed gradual upward enhancement on dynamic contrast-enhanced MR images. Reactive lymph nodes showed early enhancement on contrast-enhanced MR images and marked high intensity and low apparent diffusion coefficient values on DW images.
  
  
  CONCLUSIONS
  An indication for making the diagnosis of Kimura disease should be the subcutaneous tissue of the head and neck showing gradual upward enhancement on dynamic contrast-enhanced MRI and a lack of high intensity on DW images, associated with reactive lymph nodes.
authors.affiliation: Department of Radiology, Chiba University Hospital, Chiba City, Chiba, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Horikoshi
authors.forename: K
authors.initials: K
authors.lastname: Motoori
authors.forename: T
authors.initials: T
authors.lastname: Ueda
authors.forename: R
authors.initials: R
authors.lastname: Shimofusa
authors.forename: T
authors.initials: T
authors.lastname: Hanazawa
authors.forename: Y
authors.initials: Y
authors.lastname: Okamoto
authors.forename: H
authors.initials: H
authors.lastname: Ito
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000796:Angiolymphoid Hyperplasia with Eosinophilia / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D038524:Diffusion Magnetic Resonance Imaging / Q000379:methods; D005260:Female; D006258:Head and Neck Neoplasms / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology; D008223:Lymphoma / Q000175:diagnosis* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D010307:Parotid Neoplasms / Q000175:diagnosis / Q000473:pathology; D055815:Young Adult