Thoracolith Mimicking Pulmonary Osteosarcoma Metastasis
DOI:
https://doi.org/10.3941/jrcr.5280Abstract
A thoracolith is a small (~5 to 15 mm) smooth calcified nodule typically found incidentally in the pleural space on chest radiographs or CT scans. Its key characteristic is mobility between imaging studies. While it is a benign entity, it can rarely cause a diagnostic dilemma. In this context, we present a patient with high-grade extraosseous osteosarcoma with a thoracolith mimicking pulmonary osteosarcoma metastasis. Herein, we highlight the importance of comparing prior imaging studies to determine if there has been any positional change—indicating mobility—and diagnostic of a thoracolith, thereby obviating unnecessary workup or intervention.
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