Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: On the lateral view , projecting posteriorly at the level of the mid to lower thoracic spine seen there is a 1 .9 x 1 .0 cm ovoid opacity which appears to overlap both a vertebral body and beyond , suggesting it is in soft tissue . No definite focal consolidation is seen . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Ovoid opacity projecting over the posterior lower thorax on the lateral view of uncertain etiology . Suggest repeat with removal of any external artifact . If none or if finding persists , nonemergent chest CT would be recommended .