Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Consolidative opacity within the left lung base has progressed concerning for worsening pneumonia . The heart size is difficult to ascertain given the adjacent consolidation . The aorta remains mildly tortuous . There is no pulmonary vascular congestion . Severe emphysematous changes are again seen . Rightward deviation of the upper trachea due to a left superior mediastinal mass compatible with a thyroid goiter is re - demonstrated . A small left pleural effusion may be present . No pneumothorax is identified . Previously noted right PICC has been removed .
    OUTPUT:
    
Worsening left basilar pneumonia .