title: CT and MR findings in tuberculous mediastinitis.
abstract: OBJECTIVE
  Tuberculous mediastinitis, a rare complication of pulmonary tuberculosis, may simulate a mediastinal tumor on chest radiography. For evaluation and follow-up of the disease, CT and MRI are needed.
  
  
  METHODS
  Two cases of tuberculous mediastinitis are presented with emphasis on the importance of MRI. In both cases, MRI was performed because the CT appearance was unusual for a mediastinal tumor.
  
  
  RESULTS
  The areas of low signal intensity within the anterior mediastinal mass on both T1- and T2-weighted imaging were due to the reactive fibrous tissue and were suggestive of an inflammatory mass.
  
  
  CONCLUSIONS
  When a mediastinal mass would be unusual on CT, MRI should be performed. If there are areas of low signal intensity within the mass on both T1- and T2-weighted imaging, an inflammatory mass such as tuberculous mediastinitis, is one of the possibilities.
authors.affiliation: Department of Radiology, Showa University, School of Medicine, Tokyo, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kushihashi
authors.forename: H
authors.initials: H
authors.lastname: Munechika
authors.forename: H
authors.initials: H
authors.lastname: Motoya
authors.forename: K
authors.initials: K
authors.lastname: Hamada
authors.forename: I
authors.initials: I
authors.lastname: Satoh
authors.forename: H
authors.initials: H
authors.lastname: Naitoh
authors.forename: H
authors.initials: H
authors.lastname: Nakajima
authors.forename: K
authors.initials: K
authors.lastname: Soejima
mesh_terms: D000328:Adult; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008480:Mediastinitis / Q000175:diagnosis* / Q000000981:diagnostic imaging*; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D014397:Tuberculosis, Pulmonary / Q000175:diagnosis* / Q000000981:diagnostic imaging*