ERS/ATS 2025 Update: A CT-First Approach to Interstitial Pneumonias

A practical radiology review of ERS/ATS 2025 Update: A CT-First Approach to Interstitial Pneumonias, focused on imaging findings, differential diagnosis, reporting points, and...

RadPhrases Editorial TeamJuly 31, 20262 min read

Clinical workstation organizing radiology images within a tiered classification framework

A practical radiology review of ERS/ATS 2025 Update: A CT-First Approach to Interstitial Pneumonias, focused on imaging findings, differential diagnosis, reporting points, and high-yield teaching pearls.

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ERS/ATS 2025 Update: A CT-First Approach to Interstitial Pneumonias

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Purpose & Scope

MAJOR CONCEPTUAL SHIFTS

Diagnostic confidence must be stated

INTERSTITIAL PATTERNS (CT-FIRST THINKING)

UIP

NSIP

BIP (NEW – MAJOR PATTERN )

DAD

PPFE

LIP

ALVEOLAR FILLING DISORDERS

Organising Pneumonia (OP)

RB-ILD

AMP (NEW TERM, alveolar macrophage pneumonia)

Rare AFPs

AEP / CEP

PAP

COMBINED & UNCLASSIFIABLE

DIAGNOSTIC CONFIDENCE (MANDATORY)

RADIOLOGY REPORTING RULES

ULTRA–HIGH-YIELD TAKEAWAYS

Non-fibrotic BIP

Fibrotic BIP

Three-density sign (mosaic attenuation)

Clinical use note

Build the category and report statement together

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Purpose & Scope

MAJOR CONCEPTUAL SHIFTS

Diagnostic confidence must be stated

INTERSTITIAL PATTERNS (CT-FIRST THINKING)

UIP

NSIP

BIP (NEW – MAJOR PATTERN )

DAD

PPFE

LIP

ALVEOLAR FILLING DISORDERS

Organising Pneumonia (OP)

RB-ILD

AMP (NEW TERM, alveolar macrophage pneumonia)

Rare AFPs

AEP / CEP

PAP

COMBINED & UNCLASSIFIABLE

DIAGNOSTIC CONFIDENCE (MANDATORY)

RADIOLOGY REPORTING RULES

ULTRA–HIGH-YIELD TAKEAWAYS

Non-fibrotic BIP

Fibrotic BIP

Three-density sign (mosaic attenuation)

Clinical use note

Build the category and report statement together