"There are numerous case reports describing various causes1-8:"
Expected headings
"Plain radiograph and CT"
"Interpleural communications are known to occur in mammals including buffalo, dogs, cats, horses and rabbits 9. A study of eight slaughtered buffalo found interpleural fenestrations in four 9. A review of 47 reported cases in humans identified 9:"
"7 cases following thoracic intervention (lung biopsy, chest drain, central line, tracheostomy or pacemaker)"
"respiratory diseases such as COPD, asthma or CF findings"
"There are numerous case reports describing various causes1-8:"