Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The exam is slightly underpenetrated due to patient body habitus . Given this , there may be mild pulmonary vascular congestion . No definite focal consolidation is seen ; however , a left base retrocardiac consolidation may be difficult to entirely exclude . There is no large pleural effusion or pneumothorax . Cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Slightly underpenetrated due to patient body habitus . Possible mild pulmonary vascular congestion . Difficult to exclude left base retrocardiac consolidation due to patient body habitus , although no large focal consolidation is seen .