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Related Experiment Videos

Lymphoid interstitial pneumonia: a narrative review.

Jeffrey J Swigris1, Gerald J Berry, Thomas A Raffin

  • 1Division of Pulmonary and Critical Care Medicine, Stanford University, 300 Pasteur Drive, Stanford, CA 94305-5236, USA. jjswig@pol.net

Chest
|December 12, 2002
PubMed
Summary

Lymphoid interstitial pneumonia (LIP) is an uncommon inflammatory lung condition. While often steroid-responsive, its unpredictable course and potential to transform into lymphoma highlight the need for further research.

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Area of Science:

  • Pulmonary Medicine
  • Immunology
  • Pathology

Background:

  • Lymphoid interstitial pneumonia (LIP) is an uncommon inflammatory lung condition, often associated with autoimmune diseases like Sjögren syndrome or HIV.
  • Its classification has evolved, with recent consensus recognizing some cases as idiopathic interstitial pneumonia.
  • LIP exists on a spectrum of pulmonary lymphoproliferative disorders, ranging from benign aggregates to malignant lymphomas.

Purpose of the Study:

  • To review the current understanding of lymphoid interstitial pneumonia (LIP).
  • To discuss its classification, clinical features, associations, and pathogenesis.
  • To highlight its variable clinical course and treatment challenges.

Main Methods:

  • Literature review of existing studies on LIP.

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  • Analysis of classification systems and diagnostic criteria.
  • Synthesis of information on clinical presentation, risk factors, and outcomes.

    • Main Results:

    • LIP is characterized by diffuse lymphoid cell infiltration in the lung interstitium.
    • Risk factors include autoimmune diseases (especially Sjögren syndrome), HIV, and Epstein-Barr virus.
    • Symptoms include progressive cough and dyspnea; prognosis varies widely, with a 5-year mortality of 33-50% and a 5% transformation rate to lymphoma.

    Conclusions:

    • LIP remains a complex pulmonary condition with poorly understood pathogenesis.
    • While often treated with corticosteroids, responses are unpredictable.
    • Its potential for progression and transformation to lymphoma underscores the need for continued investigation and management strategies.