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Progressive chest radiographic changes in wet lung disease
Insights
Delayed fetal lung fluid clearance, or wet lung disease (WLD), can present with unusual chest X-ray findings. These transient WLD signs may mimic pneumonia but resolve with supportive care, guiding treatment decisions.
Area of Science:
- Neonatology
- Pediatric Radiology
- Pulmonology
Background:
- Delayed clearance of fetal lung fluid, known as wet lung disease (WLD), is a recognized clinical and radiographic diagnosis in newborns.
- Infants with WLD typically present with respiratory distress due to fluid in the lungs.
Observation:
- This study reports unusual chest roentgenographic findings in six infants diagnosed with WLD.
- These infants exhibited delayed development of pleural effusions or transient worsening of pulmonary infiltrates, mimicking infection.
- Five of the six infants received antibiotic treatment for suspected pneumonia.
Findings:
- Despite initial radiographic signs suggestive of pneumonia, all infants were clinically well and radiographically normal by 72 hours.
- Cultures remained negative, and subsequent radiographs showed resolution of pulmonary opacities and effusions.
- The observed radiographic changes are proposed to be within the spectrum of WLD.
Implications:
- The findings suggest that certain radiographic findings initially suggestive of neonatal pneumonia may actually represent WLD.
- This highlights the importance of considering WLD in the differential diagnosis of neonatal respiratory distress with atypical radiographic presentations.
- Early recognition can lead to appropriate management adjustments, including discontinuation of unnecessary antibiotics.
Abstract:
Delayed clearance of fetal lung fluid, or wet lung disease (WLD), is a common, well described clinico-radiographic diagnosis. Unusual chest roentgenographic findings in six infants with WLD are reported. All infants had either delayed development of pleural fluid collections or transient apparent worsening of pulmonary parenchymal infiltrates simulating infection. Five of the six patients were treated with antibiotics. The patients were clinically well, radiographically normal, and culture negative by 72 hours. Our findings suggest that worsening of pulmonary parenchymal opacities and the appearance of pleural effusions can be part of the WLD spectrum. An initial radiographic impression of neonatal pneumonia can be changed to WLD and antibiotics stopped after 72 hours if subsequent radiographs show clearing, cultures are negative, and clinical findings resolve as they did in our patients.