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Semin Respir Crit Care Med 2001; 22(4): 423-434
DOI: 10.1055/s-2001-17385
Copyright © 2001 by Thieme Medical Publishers, Inc., 333 Seventh Avenue, New York, NY 10001, USA. Tel.: +1(212) 584-4662

Nonspecific Interstitial Pneumonia (NSIP)

Kevin R. Flaherty1 , Fernando J. Martinez1 , William Travis2 , Joseph P. Lynch, III1
  • 1Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan
  • 2Department of Pulmonary and Mediastinal Pathology, Armed Forces Institute of Pathology, Washington, D.C
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Publikationsdatum:
26. September 2001 (online)

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ABSTRACT

Nonspecific interstitial pneumonia (NSIP) represents one histologic subtype of idiopathic interstitial pneumonia (IIP). NSIP is typified by temporal homogeneity and less profusion of fibroblastic foci than is seen with usual interstitial pneumonia (UIP), the most common IIP. Clinically patients with NSIP present with similar symptoms (cough and dyspnea) when compared to patients with UIP. The duration of these symptoms prior to presentation is variable. The finding of fever may be more common in NSIP and clubbing may be more common in UIP; however, both findings can be seen in either UIP or NSIP. Physiological findings typically demonstrate a restrictive ventilatory defect with decreased gas transfer; little difference exists between UIP and NSIP. High resolution computed tomography (HRCT) scans are more likely to show honeycombing with UIP and a ground-glass pattern with NSIP, however, either of these findings can be seen with UIP or NSIP. The most striking differential feature between NSIP and UIP is the markedly better prognosis for patients with NSIP, a finding that cannot be explained by baseline differences in physiology or radiographic features. In this article we explore the clinical, physiological, and radiographic features of NSIP. We also review available information regarding response to therapy and prognosis.

KEYWORD

Idiopathic interstitial pneumonia - nonspecific interstitial pneumonia

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