Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small volume free peritoneal air , consistent with abdominal surgical procedure from ___ . Shallow inspiration accentuates heart size . There is no pulmonary edema or venous congestion . Small right basilar opacity , likely atelectasis , consider pneumonitis in the appropriate clinical setting There are degenerative changes left shoulder .
    OUTPUT:
    
Free peritoneal air , consistent with recent surgical procedure . Small right basilar opacity , likely atelectasis , consider pneumonitis in the appropriate clinical setting .