Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to previous exam from ___ and preop evaluation from ___ . Lower lung volumes are seen on the current exam . There is opacity projecting over the left posterior costophrenic angle , likely small effusion with underlying atelectasis . Elsewhere , the lungs are clear . Cardiomediastinal silhouette is within normal limits . Surgical clips and catheter is seen within the upper abdomen . Prominent loops of bowel are seen in the upper abdomen , for which clinical correlation is suggested .
    OUTPUT:
    
Lower lung volumes . Blunting of posterior costophrenic angle likely due to small effusion and underlying atelectasis , clinical correlation suggested regarding possible infection . Postoperative changes with prominent loops of bowel in the upper abdomen , for which clinical correlation suggested and additional imaging can be performed as clinically indicated .