Fig. 4

Contrast-enhanced chest computed tomography in axial, coronal, and sagittal views demonstrating a large cystic lesion in the right upper and middle hemithorax measuring 15.5 cm (AP) × 11.3 cm (T) × 14.9 cm (CC) and displacing the mediastinum to the contralateral side of the chest. The cystic lesion has a thick rind with double membranes on its anterior and posterior walls. No internal architecture or daughter cysts are seen. Features are suggestive of hydatid cyst. AP Antero-posterior, T Transverse, CC Craniocaudal