Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is diffuse increase in interstitial markings bilaterally which could be due to edema however , underlying atypical infection or metastatic disease is not excluded . No pleural effusion or pneumothorax seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
diffuse increase in interstitial markings bilaterally which could be due to edema however , underlying atypical infection or metastatic disease is not excluded . Please note that CT is more sensitive in detecting small pulmonary nodules .