Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to ___ chest radiograph , cardiomediastinal contours are stable . Lung volumes are relatively low , and a bilateral reticular interstitial pattern is present with mid and lower lung predominance . Small left pleural effusion is also present as well as a nonspecific patchy opacity in the left lower lobe anterior medially .
    OUTPUT:
    
1 . Left lower lobe anterior medial basilar opacity , which could potentially be due to infectious pneumonia in the appropriate clinical setting . Adjacent small pleural effusion . 2 . Mid and lower lung predominant reticular opacities are concerning for chronic interstitial lung disease . If the patient has symptoms of pneumonia , initial further evaluation with followup chest radiographs in 4 weeks after completion of antibiotic therapy would be suggested . If the interstitial abnormality persists at that time , high - resolution chest CT would be recommended . In the absence of infectious symptoms , CT would be recommended at this time . To further characterize both the left lower lobe abnormality in the more diffuse interstitial process .