CTICasesCystic Pulmonary Metastases from Uterine Sarcoma
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[...]. Cystic Pulmonary Metastases from Uterine Sarcoma. CTICases. Published March 24, 2014. https://str-case-explorer.pages.dev/c/6gn83
Imaging findings
Chest radiograph and CT show numerous well-defined, thin-walled cystic lesions of varying sizes, interspersed with solid nodules throughout both lungs in a patient with a pelvic mass. Pathology of the primary pelvic mass confirmed a uterine sarcoma.
Key takeaways
Pulmonary metastases from mesenchymal tumors, particularly uterine sarcomas, can present with thin-walled cystic lesions alongside typical solid nodules. The proposed mechanism for these cystic metastases is a ball-valve phenomenon where tumor growth adjacent to small airways causes focal airway obstruction and alveolar expansion. In any patient with multifocal cystic lung disease and solid nodules, sarcoma metastases should be considered.
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