Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A frontal upright view of the chest was obtained portably . There is no focal consolidation , pleural effusion or pneumothorax . A ___- mm nodule projecting over the left lung base may represent confluence of shadows . Shallow obliques may be helpful for further evaluation . Heart size is normal . Mediastinal silhouette and hilar contours are normal .
    OUTPUT:
    
1 . A ___- mm nodule projecting over the left lung base may represent confluence of shadows . Shallow obliques may be helpful for further evaluation . 2 . No pneumonia , edema , or effusion .