Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small abnormal density in the right midlung zone immediately superior to the oblique fissure , which was not present on the prior study and appears to pull up on the oblique fissure . This is atypical for atelectasis , and early pneumonia , particularly in an immunosuppressed patient , can not be ruled out . Chest CT for further characterization or empiric pneumonia treatment with followup radiographs in ___ weeks is recommended . There is no pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
1 . New small abnormal density in the right midlung zone for which either chest CT for further characterization or empiric pneumonia treatment with followup radiographs in ___ weeks is recommended .