title: [Clinicopathological analysis of 6 cases of diffuse panbronchiolitis].
abstract: OBJECTIVE
  To study the clinical and pathological characteristics of diffuse panbronchiolitis (DPB).
  
  
  METHODS
  Clinical history of six cases of DPB and their pathological slides were studied and analyzed.
  
  
  RESULTS
  Diffuse panbronchiolitis was characterized by chronic recurrent nasosinusitis and pulmonary infection and respiratory bronchiolitis. Pathologically, all layers of the respiratory bronchiole walls were involved. Prominent chronic inflammation with lymphocytes, plasma cells and histiocytes infiltration was noted in all cases. In the lumens of the bronchioles, PMN or mucus could be identified. The chronic inflammatory cell infiltration also contained numerous foamy macrophages within the walls of the small bronchioles and in the stroma of the lung as well. Among the 6 cases of DPB, two cases were associated with thymoma.
  
  
  CONCLUSIONS
  DPB is a distinct clinicopathological entity. Open lung biopsy or thorocoscopic biopsy is necessary for the correct diagnosis of clinical atypical DPB cases.
authors.affiliation: Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100730, China.
authors.forename: H
authors.initials: H
authors.lastname: Liu
authors.forename: T
authors.initials: T
authors.lastname: Liu
authors.forename: H
authors.initials: H
authors.lastname: Ren
mesh_terms: D000293:Adolescent; D000328:Adult; D001706:Biopsy; D001988:Bronchiolitis / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged