Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . As also seen on the subsequent CT abdomen and pelvis , there is a 2 .3 cm left lower lobe pulmonary nodule which is worrisome for malignancy , either primary or metastatic . Trace right pleural effusion seen on subsequent abdomen CT was better appreciated on that study . Slight prominence of the interstitium as compared to the prior study may be due to development of interval mild interstitial edema . The cardiac and mediastinal silhouettes are stable . Retrocardiac air - fluid level is most consistent with hiatal hernia .
    OUTPUT:
    
Left lower lobe 2 .7 cm pulmonary nodule better seen on subsequent CT abdomen / pelvis concerning for malignancy , metastatic versus primary . Interval diffuse mild increased interstitial markings bilaterally , mild interstitial edema . Trace right pleural effusion seen on subsequent CT was better evaluated on that study . Hiatal hernia .