Patients with pleurisy, after their recovery, often exhibit certain signs on chest X-rays, such as thickening and adhesion of the pleura, and blunting of the costophrenic angle. These conditions commonly arise because diseases like pleurisy might have a somewhat extended duration or are not detected timely, lacking prompt medical treatment. Hence, pleural thickening is prone to occur, visible on X-rays at the lung margins, where localized soft tissue density appears slightly thicker. Normally, the edge of the lung at the costophrenic angle would be quite sharp, but after pleural thickening, this angle becomes blunted or even rounded. In some cases, encapsulated effusions might be seen on a chest X-ray as a spindle-shaped high-density shadow near the chest wall, which appears as a notably bright shadow.