Fig. 1From: Pulmonary fibrosis on the lateral chest radiograph: Kerley D lines revisitedLateral chest radiographs demonstrating a normal retrosternal clear space (a), the lucent area between the sternum and ascending aorta, and retrosternal reticular opacities due to interstitial pulmonary oedema, known as “Kerley D lines” (b). Pleural effusions accompany the oedemaBack to article page