A 68-year-old woman was referred to our hospital for a lung nodule identified on chest radiography. Computed tomography (CT) showed a 10-mm calcified nodule in the left thoracic cavity. On follow-up CT, the nodule was found in a different location within the left thoracic cavity. Thoracoscopy was performed under local anesthesia, removing a pearl-like pleural stone. Thoracolithiasis was therefo...
