Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a lingular opacity which could reflect pneumonia in the appropriate clinical setting . There is no pleural effusion or pneumothorax . No pulmonary edema is seen . The heart size is normal , and the mediastinal and hilar contours are normal . No acute osseous abnormality is seen .
    OUTPUT:
    
Lingular opacity could reflect pneumonia in the appropriate clinical setting . Recommend follow - up chest radiograph after treatment . If not fitting the clinical picture for infection , additional imaging could be acquired at this time as this nonspecific peripheral opacity could potentially represent infarct in the setting of pulmonary embolism .