Follicular bronchitis/bronchiolitis

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Follicular bronchitis/bronchiolitis is an uncommon type of medical lung disease.



  • No distinct nodule or mass.
  • Classically: increased reticular marking, i.e. interstitial pattern.

Images: Intersitial pattern - radiographs (



  • Peribronchiolar/peribronchial lymphoid nodules with:
    • Reactive germinal centres.
      • Lack of these should raise suspicion for lymphoma.
    • Plasma cells.
  • +/-Lymphoid nodules in the interlobular septa.


  • Lung parenchyma distant from nodule = normal; no lymphocytic infiltrate.


See also


  1. Nicholson AG (August 2001). "Lymphocytic interstitial pneumonia and other lymphoproliferative disorders in the lung". Semin Respir Crit Care Med 22 (4): 409–22. doi:10.1055/s-2001-17384. PMID 16088689.
  2. Aerni MR, Vassallo R, Myers JL, Lindell RM, Ryu JH (February 2008). "Follicular bronchiolitis in surgical lung biopsies: clinical implications in 12 patients". Respir Med 102 (2): 307–12. doi:10.1016/j.rmed.2007.07.032. PMID 17997299.
  3. Kinane BT, Mansell AL, Zwerdling RG, Lapey A, Shannon DC (October 1993). "Follicular bronchitis in the pediatric population". Chest 104 (4): 1183–6. PMID 8404188.
  4. AFIP atlas of nontumour pathology. 2002. Vo. 2. P.277. ISBN 1-881041-79-4.