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Figure 30b. Diffuse persistent PIE in a 3-week-old girl with a history of positive-pressure mechanical ventilation. (a) Frontal chest radiograph shows overexpansion of most of the left lung by multiple cystic lucencies, producing contralateral mediastinal displacement and left retrocardiac compressive atelectasis. (b) Axial CT scan shows multiple collections of interstitial gas in the left upper lobe that surround lines (arrows) and dots (arrowheads) of soft-tissue attenuation. (c) Photograph of the resected left upper lobe shows the surface of the lung blistered by multiple subpleural cysts (arrows).
