Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains mildly enlarged . Patient is status post esophagectomy and gastric pull - through with unchanged mediastinal contour . Hilar contours are normal , and pulmonary vasculature is normal . New small left pleural effusion is present with ill - defined patchy opacity in the left lung base . Right lung is clear . No pneumothorax is detected . No acute osseous abnormalities seen .
    OUTPUT:
    
New small left pleural effusion with patchy left basilar opacity , a finding which may reflect developing infection in the correct clinical setting .