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(A) An axial computed tomography (CT) image shows a complicated pleural effusion with inner septations and adjacent atelectatic lung parenchyma. (B) A 10F nontunneled pigtail catheter is placed percutaneously under CT guidance. (C) A chest radiograph shows a complete opacification in the left hemothorax due to pleural effusion. (D) Follow-up chest radiograph after placement of pigtail drainage catheter shows decreased effusion with reexpanded lung parenchyma.
