Information provided to the candidate
Sg: 2 month old filly
Hx: Presented for respiratory distress, lethargy, anorexia
Rads: Left lateral view of the thorax
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Candidates received points for:
Dilated fluid and air filled thoracic esophagus with fluid-air interface
Diffuse mixed interstitial and alveolar pulmonary pattern
Poorly defined radiolucencies within the caudo-ventral alveolar pattern
Radiographic Diagnosis:
Megaesophagus: differentials of idiopathic, ulcers, aerophagia (less likely due to fluid accumulation); probably incidental to pulmonary pathology
Hematogenous pneumonia with possible abscess formation: differentials of bacterial etiologies including Rodococcus. Aspiration pneumonia possible but less likely given distribution
Outcome:
Foal was euthanized. A cause of megaesophagus was not determined. Rodococcus was cultured from lungs
