PMC9985186_01
A. Corresponding X-ray shows right-sided pulmonary shadowing. B. CT of the chest demonstrates the right dorsal lung consolidation with cystic and septated structures (courtesy of Prof. Dr. A. Mahnken, Department of Diagnostic and Interventional Radiology at Marburg University Hospital). C. On B-mode US, an echocomplex, septated, cystic lung consolidation in the rightdorsal region was seen, corresponding to stage CE2. D. On CEUS, homogeneous, marked bronchial arterial enhancement in the periphery of the consolidation was seen after 12 s, with complete non-perfused central area
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The CT scan of the chest showed three cystic lesions with contact to the pleura (Fig. 1B). The most prominent lesion in the right upper-posterior region of the lung measured 6 x 5 x 2.5 cm and showed a complex pattern, with cystic and septated structures within the lesions (Stage CE2) (Fig. 1C). CEUS showed marked rim-like peripheral bronchial arterial enhancement (time to enhancement: 12 s), with sparing of the central region in both lung consolidations (Fig. 1D).
Atypical partial lung excision specimen of the right medial lobe, with a 0.2 cm gray-yellow nodal lesion, on histopathological examination (HE staining
A), PAS staining, B. representing a cystic structure (40x: to the right), adjacent to regular lung tissue (40x: to the left), containing PAS-p vositive cuticula, characterizing an echinococcal cyst, surrounded by fibrotic tissue. Protoscolices were not present
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An atypical surgical resection and cyst drainage were performed after two weeks (Fig. 2).