Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low . The cardiac silhouette and pulmonary vasculature are unremarkable . The central pulmonary vasculature is somewhat prominent , without overt edema . There is no pleural effusion or pneumothorax . Small Bochdalek 's hernia is projecting posteriorly , containing upper pole of the right kidney and fat as demonstrated on CT abdomen from ___ .
    OUTPUT:
    
No acute intrathoracic abnormality .