Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are multiple bilateral patchy opacities in the lung , the largest in the lateral left mid lung zone but also seen in the right greater than left bibasilar regions and possibly in the upper lobes as well . Differential diagnosis includes multifocal pneumonia versus neoplastic process , metastatic disease , particularly if patient has a known primary . Given history of trauma , pulmonary contusion can not be excluded . Small left pleural effusion is seen . Difficult to exclude a trace right pleural effusion . No pneumothorax is seen . The cardiac silhouette is mildly enlarged . The aorta is calcified and tortuous . This is a partially imaged the proximal left humerus fracture .
    OUTPUT:
    
Multiple bilateral patchy opacities projecting over the lungs . Differential diagnosis includes multifocal pneumonia however , metastatic disease not excluded particularly if this patient has a known history of malignancy . Given setting of trauma , a pulmonary contusion can not be excluded