Radiographic Diagnosis of Megaesophagus and Secondary Aspiration Pneumonia in a 6-Year-Old Friesian Stallion: A Case Report

Articles in Press

Document Type : Case Report

Authors

1 Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran

2 Veterinarian, Horse Practitioner,Tehran,Iran

Abstract

Background: Thoracic megaesophagus is a rare and potentially life-threatening condition in horses, characterized by the dilation and decreased motility of the esophagus, leading to impaired swallowing and subsequent regurgitation. Due to the regurgitation and aspiration of feed material into the respiratory tract, aspiration pneumonia is a common complication with megaesophagus. Objective: Early and accurate diagnosis is crucial to initiate effective treatment and minimize the risk of complications. The goal of current study is diagnosis of this disorder by contrast radiography. METHODS: Contrast radiography was performed to evaluate the esophagus following oral administration of a barium sulfate suspension, lateral images were acquired using a mobile X-ray unit. Result: Lateral radiographs with and without oral contrast media show, dilated esophagus with fluid (contrast medium) and air, resulting in a gas‐ capped fluid line in the dilated caudal thoracic esophagus. In radiographic projections, cranial thoracic esophagus is also dilated with radiopaque fluid. There is mixed alveolar and interstitial pattern in the caudal lung lobes which is best seen over the caudal margin of the cardiac silhouette. These radiographic findings are indicative of megaesophagus in thoracic part in association with aspiration pneumonia. Conclusion: Current case report underscores the significance of considering thoracic megaesophagus as a potential cause of respiratory distress in horses. Early diagnosis and a comprehensive approach are crucial in managing this condition successfully. Integration of human medicine techniques, such as anti-reflux medications, physical therapy, and dietary modifications, can improve the quality of life for horses suffering from thoracic megaesophagus.

Keywords

Iranian Journal of Veterinary Medicine

Articles in Press, Accepted Manuscript
Available Online from 09 December 2024

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