Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to prior , there is mild increased linear opacity in bilateral mid lung and ___ , ___ represent septal thickening due to worsening sarcoidosis or infection . Hilar lymphadenopathy has also minimally progressed since ___ . There has been improvement of the left middle lobe opacity . The heart size is normal . No pleural abnormality is seen .
    OUTPUT:
    
Mild increase in right upper lobe and left midlung opacities , ___ represent progression of sarcoidosis , though superimposed infection can not be excluded . Repeat exam in ___ weeks after antibiotic therapy with radiograph or chest CT is recommended .