Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to the previous exam from ___ . Lungs remain clear , costophrenic angles are sharp . Cardiomediastinal silhouette is stable . High - density material seen in the nondistended colon . Soft tissue and osseous structures are otherwise unremarkable .
    OUTPUT:
    
No acute intrathoracic process .