Survival of two dogs with pyothorax secondary to perforating oesophageal foreign body – PubMed (nih.gov)

Boyd, C., M. Claus, G. Hosgood and L. Smart (2017). “Survival of two dogs with pyothorax secondary to perforating oesophageal foreign body.” Aust Vet J95(1-2): 41-45.