Unique manifestation of presumed cardiogenic pulmonary oedema in a dog

A 12‐year‐old spayed female American Pit Bull Terrier mix with a history of stage B2 myxomatous mitral valvular disease and a grade V/VI left apical systolic murmur presented as a referral for intermittent hacking coughing and a suspected primary pulmonary mass identified on thoracic radiographs obtained by her primary veterinarian. Her primary veterinarian initiated a furosemide trial and referred her to Gulf Coast Veterinary Specialists (GCVS) Internal Medicine for further investigation; evaluation at GCVS noted resolution of the coughing, and repeat thoracic radiographs demonstrated resolution of the previously identified left pulmonary mass, with a new mixed pattern likely of oesophageal origin noted in its place, suspected to represent fluid or gas. The absence of a pulmonary mass on the thoracic radiographs obtained at GCVS following furosemide administration, supported the interpretation that the pulmonary opacity was likely an atypical manifestation of early cardiogenic pulmonary oedema.