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Related Experiment Video

Updated: Dec 8, 2025

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

Published on: June 16, 2020

Interstitial pneumonia with autoimmune features.

Sham Santhanam¹, Kavitha Mohanasundaram², Shanmuganandan Krishnan³

¹Gleneagles Global Health City, Chennai,Tamil Nadu, India,

The Journal of the Royal College of Physicians of Edinburgh

|September 16, 2020

Summary

This summary is machine-generated.

Interstitial lung disease (ILD) with autoimmune features (IPAF) requires careful diagnosis to differentiate from idiopathic cases. Current criteria aid early treatment initiation but have limitations, with ongoing research into antifibrotics and survival outcomes.

Keywords:

CTD–ILD HRCT chest connective tissue disorder idiopathic pulmonary ﬁbrosis interstitial lung disease interstitial pneumonia with autoimmune features

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Area of Science:

Pulmonology
Rheumatology
Immunology

Background:

Interstitial lung disease (ILD) encompasses inflammatory and fibrotic lung conditions, often secondary to connective tissue diseases (CTDs).
Identifying secondary causes is crucial before diagnosing idiopathic ILD, as ILD is a common CTD manifestation.
Interstitial pneumonia with autoimmune features (IPAF) describes ILD in patients with CTD features or autoantibodies.

Purpose of the Study:

To discuss the current classification criteria for IPAF.
To highlight the clinical implications of IPAF classification for patient management.
To review the limitations of current IPAF criteria and treatment approaches.

Main Methods:

Review of current IPAF classification criteria based on clinical, serologic, and morphologic domains.
Discussion of treatment strategies extrapolated from systemic sclerosis-ILD and idiopathic NSIP.
Mention of ongoing studies on antifibrotic therapies in IPAF.

Main Results:

The IPAF classification requires a mandatory criterion plus one feature from two of three domains (clinical, serologic, morphologic).
Classification facilitates early immunosuppression and monitoring for CTD development.
Limitations include domain bias and exclusion of certain antibodies (ANCA, cytoplasmic ANA patterns).

Conclusions:

IPAF classification aids in early management but requires refinement.
Treatment protocols are largely extrapolated, with antifibrotic research ongoing.
Conflicting data exists regarding IPAF patient survival compared to IPF.