Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to previous exams from ___ and ___ . Linear opacities at the left greater than right base are suggestive of subsegmental atelectasis . Mildly indistinct pulmonary vascular markings are seen suggestive of mild failure ; however , there is no definite confluent consolidation . Small left pleural effusion is seen . Cardiac silhouette is enlarged but stable . Again seen is a prosthetic valve . Median sternotomy wires are again seen with fracture at the inferior most wire . Osseous and soft tissue structures are otherwise unremarkable .
    OUTPUT:
    
Mildly indistinct pulmonary vascular markings suggestive of mild failure without frank pulmonary edema .