CXR AP shows bibasilar infiltrates, right greater than left, and a small right pleural effusion.CXR AP (left) shows a dense opacity in the left lower lobe which on the lateral (right) is seen to be located posteriorly, causing a spine sign. The lateral radiograph also shows the T8 and T10 vertebral bodes to be H-shaped.CXR AP (left) shows opacity in the left lower lobe that on the lateral (middle) is located posteriorly (spine sign). The vertebral bodies (right) have an H-shaped appearance throughout the thoracic and lumbar spine.