PMC10302506_01
(a, b). Axial post-contrast CT scan images: Pulmonary nodules compatible with echinococcal cysts in both lung parenchyma, containing floating membranes (arrow).
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It showed multiple echinococcal cysts in both lung parenchyma, containing floating membranes for most of them (Fig. 1), with intra-arterial cysts extending along the segmental pulmonary arteries of the left upper lobe and the right upper and middle lobes, that caused luminal widening consistent with emboli (Fig. 2).
Axial post-contrast CT scan image: Heterogeneous pulmonary cystic image containing air in the left upper lobe (arrow).
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Axial enhanced CT scan image: Univesicular hydatid cyst in the right ventricle (arrow).
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Axial post-contrast CT scan image: Enlarged pulmonary trunk - Main pulmonary artery to ascending aorta ratio >1.
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(a, b). Axial MRI, T2-weighted images: Round hyperintense structure, containing hypointense floating membranes, compatible with a pulmonary hydatid cysts (arrow).
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T2-weighted sequences (Fig. 6). The cystic structure of the emboli was also shown in MR images.