Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is relative ___ of the left lower hemithorax , likely due to technique and patient body habitus , and this region is not well assessed . No obvious consolidation is seen . No large pleural effusion . The cardiac and mediastinal silhouettes are grossly stable . There are low lung volumes , but no overt pulmonary edema .
    OUTPUT:
    
Suboptimal evaluation of the left lung base due to ___ . No obvious consolidation seen .