Category Pediatric Imaging

Child Abuse, Rib Fractures

KEY FACTS Terminology Child abuse: Any act or failure to act by parent/caretaker that causes harm or imminent risk of harm to child Imaging Posterior rib fractures most common & specific for nonaccidental trauma (NAT) Radiography Linear lucency of acute…

Parapneumonic Effusion and Empyema

KEY FACTS Terminology Pleural effusions classified as transudative or exudative Parapneumonic effusions are exudative secondary to adjacent lung infection & ↑ capillary permeability Imaging Upright chest radiograph Flattened & elevated hemidiaphragm, lateral shift of diaphragm apex, gastric bubble > 1.5…

Round Pneumonia

KEY FACTS Terminology Bacterial lung infection with very round, well-defined appearance on chest radiography; simulates mass lesion Majority seen in patients < 8 years of age Imaging Well-circumscribed round opacity ± air bronchograms Most common posteriorly in lower lobe superior…

Viral Chest Infection

KEY FACTS Terminology Viral infection may involve airways &/or lung parenchyma Bronchiolitis: Acute inflammation & necrosis of epithelial cells lining small airways with ↑ mucus production Classically < 2 years of age Other terms: Viral pneumonia, lower respiratory tract infection,…

Bronchopulmonary Dysplasia

KEY FACTS Terminology Current definition of bronchopulmonary dysplasia (BPD) Chronic lung disease of premature infants born at < 32-week gestation O₂ dependency for at least 28 days Failure of O₂ challenge at 36-week postmenstrual age Chest radiograph abnormalities no longer…