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Figure 37: Radiographs showing the value of lateral radiography in the detection of smaller pleural effusions. There is blunting of the right costophrenic angle on the erect radiograph (left), but the appearances are not diagnostic of a pleural effusion. However, the lateral decubitus fi lm (right) shows layering of the pleural fl uid (arrow)

Figure 37: Radiographs showing the value of lateral radiography in the detection of smaller pleural effusions. There is blunting of the right costophrenic angle on the erect radiograph (left), but the appearances are not diagnostic of a pleural effusion. However, the lateral decubitus fi lm (right) shows layering of the pleural fl uid (arrow)