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KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Pathology
Clinical Issues
Diagnostic Checklist
TERMINOLOGY
Abbreviations
- Organizing pneumonia (OP)
- Cicatricial organizing pneumonia (CiOP)
- Cryptogenic organizing pneumonia (COP)
Synonyms
- Bronchiolitis obliterans organizing pneumonia (BOOP): Term no longer in use
Definitions
- OP: Pathological pattern defined by intraalveolar buds of granulation tissue consisting of fibroblasts and myofibroblasts intermixed with loose connective tissue matrix, especially consisting of collagen
- OP is relatively common manifestation of acute lung injury
- CiOP: Intraluminal collagen deposition on background of otherwise classic OP with formation of peculiar fibrous nodules or fibrotic linear bands
- COP: Clinical pathological entity without known cause, histologically characterized by OP
IMAGING
General Features
Radiographic Findings
CT Findings
Nuclear Medicine Findings
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Selected References
- Lee JH et al: Diagnostic procedures and clinico-radiological findings of acute fibrinous and organizing pneumonia: a systematic review and pooled analysis. Eur Radiol. (10):7283-7294, 2021
- Zare Mehrjardi M et al: Radio-pathological correlation of organizing pneumonia (OP): a pictorial review. Br J Radiol. 90(1071):20160723, 2017
Related Anatomy
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Related Differential Diagnoses
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References
Tables
Tables
KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Pathology
Clinical Issues
Diagnostic Checklist
TERMINOLOGY
Abbreviations
- Organizing pneumonia (OP)
- Cicatricial organizing pneumonia (CiOP)
- Cryptogenic organizing pneumonia (COP)
Synonyms
- Bronchiolitis obliterans organizing pneumonia (BOOP): Term no longer in use
Definitions
- OP: Pathological pattern defined by intraalveolar buds of granulation tissue consisting of fibroblasts and myofibroblasts intermixed with loose connective tissue matrix, especially consisting of collagen
- OP is relatively common manifestation of acute lung injury
- CiOP: Intraluminal collagen deposition on background of otherwise classic OP with formation of peculiar fibrous nodules or fibrotic linear bands
- COP: Clinical pathological entity without known cause, histologically characterized by OP
IMAGING
General Features
Radiographic Findings
CT Findings
Nuclear Medicine Findings
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Selected References
- Lee JH et al: Diagnostic procedures and clinico-radiological findings of acute fibrinous and organizing pneumonia: a systematic review and pooled analysis. Eur Radiol. (10):7283-7294, 2021
- Zare Mehrjardi M et al: Radio-pathological correlation of organizing pneumonia (OP): a pictorial review. Br J Radiol. 90(1071):20160723, 2017
