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Chest
Diagnosis
Infections
Bacteria
Actinomycosis
Actinomycosis
Carlos S. Restrepo, MD
;
Tomás Franquet, MD, PhD
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KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Pathology
Clinical Issues
Diagnostic Checklist
TERMINOLOGY
Definitions
Granulomatous infection caused by
Actinomyces
species, most commonly
A. israelii;
gram-positive filamentous anaerobic saprophytic organism
Parenchymal actinomycosis
: Aspiration of endogenous oropharyngeal organisms into lungs
Bronchiectatic actinomycosis
: Colonization of devitalized tissue and bronchiectasis
Endobronchial actinomycosis associated with broncholithiasis or foreign body
: Colonization of preexisting endobronchial broncholith/foreign body
IMAGING
Radiographic Findings
CT Findings
Nuclear Medicine Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Reporting Tips
Selected References
Tanaka S et al: Pulmonary actinomycosis mimicking pulmonary cancer on fluorine-18 fluorodeoxyglucose PET-CT. Cureus. 12(12):e12306, 2020
Higashi Y et al: Pulmonary actinomycosis mimicking pulmonary aspergilloma and a brief review of the literature. Intern Med. 56(4):449-53, 2017
Valour F et al: Actinomycosis: etiology, clinical features, diagnosis, treatment, and management. Infect Drug Resist. 7:183-97, 2014
Kim SR et al: Pulmonary actinomycosis during the first decade of 21st century: cases of 94 patients. BMC Infect Dis. 13:216, 2013
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
Definitions
Granulomatous infection caused by
Actinomyces
species, most commonly
A. israelii;
gram-positive filamentous anaerobic saprophytic organism
Parenchymal actinomycosis
: Aspiration of endogenous oropharyngeal organisms into lungs
Bronchiectatic actinomycosis
: Colonization of devitalized tissue and bronchiectasis
Endobronchial actinomycosis associated with broncholithiasis or foreign body
: Colonization of preexisting endobronchial broncholith/foreign body
IMAGING
Radiographic Findings
CT Findings
Nuclear Medicine Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Reporting Tips
Selected References
Tanaka S et al: Pulmonary actinomycosis mimicking pulmonary cancer on fluorine-18 fluorodeoxyglucose PET-CT. Cureus. 12(12):e12306, 2020
Higashi Y et al: Pulmonary actinomycosis mimicking pulmonary aspergilloma and a brief review of the literature. Intern Med. 56(4):449-53, 2017
Valour F et al: Actinomycosis: etiology, clinical features, diagnosis, treatment, and management. Infect Drug Resist. 7:183-97, 2014
Kim SR et al: Pulmonary actinomycosis during the first decade of 21st century: cases of 94 patients. BMC Infect Dis. 13:216, 2013
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