Related Experiment Video
Updated: Mar 14, 2026
Protocol and Guidelines for Point-of-Care Lung Ultrasound in Diagnosing Neonatal Pulmonary Diseases Based on International Expert Consensus
Published on: March 6, 2019
Extralobar pulmonary sequestration in neonates: The natural course and predictive factors associated with spontaneous
Hee Mang Yoon1, Ellen Ai-Rhan Kim2, Sung-Hoon Chung3
1Department of Radiology and Research Institute of Radiology, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 138-736, Korea.
Purpose:
To describe the natural course of extralobar pulmonary sequestration (EPS) and identify factors associated with spontaneous regression of EPS.
Materials And Methods:
We retrospectively searched for patients diagnosed with EPS on initial contrast CT scan within 1 month after birth and had a follow-up CT scan without treatment. Spontaneous regression of EPS was assessed by percentage decrease in volume (PDV) and percentage decrease in sum of the diameter of systemic feeding arteries (PDD) by comparing initial and follow-up CT scans. Clinical and CT features were analysed to determine factors associated with PDV and PDD rates.
Results:
Fifty-one neonates were included. The cumulative proportions of patients reaching PDV > 50 % and PDD > 50 % were 93.0 % and 73.3 % at 4 years, respectively. Tissue attenuation was significantly associated with PDV rate (B = -21.78, P < .001). The tissue attenuation (B = -22.62, P = .001) and diameter of the largest systemic feeding arteries (B = -48.31, P = .011) were significant factors associated with PDD rate.
Conclusion:
The volume and diameter of systemic feeding arteries of EPS spontaneously decreased within 4 years without treatment. EPSs showing a low tissue attenuation and small diameter of the largest systemic feeding arteries on initial contrast-enhanced CT scans were likely to regress spontaneously.
Key Points:
• Extralobar pulmonary sequestration (EPS) could show spontaneous regression. • Initial CT features may predict spontaneous regression of EPS. • The tissue attenuation and diameter of systemic feeding artery are important factors.
More Related Videos
08:58Development of a Neonatal Piglet Acute Lung Injury Model Recreating the Early Environment of Preterm Infant Lungs
Published on: October 31, 2025
05:50International Expert Consensus and Recommendations for Neonatal Pneumothorax Ultrasound Diagnosis and Ultrasound-guided Thoracentesis Procedure
Published on: March 12, 2020
Related Concept Videos
01:17Pulmonary Cycle: Exhalation
01:19Factors Affecting Pulmonary Ventilation
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...