“Bubble-like” lung metastases in osteosarcoma patients
2009
Abstract Purpose Cavitation of pulmonary metastases have been reported by several authors either as a spontaneous phenomenon or as a consequence of chemotherapy. We present two cases, with this type of image in follow-up, and 20–45 months after the end of treatment. This was the first sign of pulmonary metastases. Results Two patients with osteogenic sarcoma developed radiological evidence of pulmonary "bubble-like" cavitation several years following completion of chemotherapy. In one patient the "bubble-like" cavitation transformed into a solid nodule. Both patients had surgical resections of all pulmonary lesions, and histology confirmed presence of viable osteosarcoma metastases. Conclusion The two cases suggest that onset of "bubble-like" cavitation in lung parenchyma of osteosarcoma patients may be the first sign of pulmonary metastases.
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