Bilateral subpulmonic pleural effusions, larger on the right side: Chest frontal (panel A) and lateral (panel B) views and image of the Rock of Gibraltar (panel C). The elevation of the lung bases with an abrupt drop-off laterally on the frontal view and posteriorly on the lateral view has been dubbed the "Rock of Gibraltar sign." This finding is best seen on the right side on the frontal view and bilaterally on the lateral view.
