Fig. 2

CT of a full-term neonate with SPM (Patient-1). Yellow arrows: the lateral borders of the fascia overlying the thymus and pericardium. Pink arrows: hyperaeration around the main bronchi, indicating air dissection through the peribronchovascular sheaths. The Asterisk (*) multiloculated hyperlucency in the anterior mediastinum displacing the thymus superolaterally, with thin radiopaque lines showing the hyperinflated thymic capsule. (T) Thymus; (H) Heart. All segmental bronchi are within lungs, and no lobar emphysema is noted