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Lung-nontumor

Other interstitial pneumonitis / fibrosis

Nonspecific interstitial pneumonia/fibrosis


Reviewers: Elliot Weisenberg, M.D. (see Reviewers page)
Revised: 25 September 2011, last major update September 2011
Copyright: (c) 2003-2011, PathologyOutlines.com, Inc.

Definition
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● Often related to autoimmune diseases
● Cellular and fibrosing patterns
● Better prognosis than UIC; cellular pattern has better prognosis than fibrotic pattern, with good response to steroids
● Some patients have findings of both UIP and NSIP, but have poor prognosis of UIP

Micro description
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Cellular pattern: lymphoplasmacytic infiltrates in a patchy or uniform distribution with minimal fibrosis
Fibrosing pattern: patchy to diffuse interstitial fibrosis of uniform age (compare to UIP)

End of Lung-nontumor > Other interstitial pneumonitis / fibrosis > Nonspecific interstitial pneumonia/fibrosis


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