Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a slightly increased density overlying the left lung base , which may represent an early pneumonia or may be related to overlying soft tissue . Followup radiographs are recommended in 1 week to evaluate for interval change . The heart size is top - normal . A metallic fiducial is noted in the right upper lung zone . There is no pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
1 . Equivocal density overlying the left lung base for which followup radiographs are recommended 1 week .