Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new focal consolidation in the left mid and lower lung zone . The remainder of the lungs are clear . There is no pulmonary edema . The left costophrenic angle is somewhat obscured , which could be due to the adjacent opacity or small pleural effusion . There is no right - sided pleural effusion . There is no pneumothorax . The cardiomediastinal silhouette is normal . There is no free intraperitoneal is identified below the hemidiaphragms .
    OUTPUT:
    
New left mid and lower lung zone opacity , which in the proper clinical setting is concerning for pneumonia . Other etiologies could include aspiration or diffuse alveolar hemorrhage , although these are thought to be less likely ; malignant involvement is also not excluded as a coinciding etiology .