Subepiglottic cyst in three foals.

The research article focuses on studying the case of three foals afflicted with a subepiglottic cyst which resulted in chronic symptoms such as cough, nasal discharge, and pneumonia. The cysts were found to likely have traumatic origins as per histologic examination.

Key Findings

The main observations from the research can be summarized as follows:

• The study involved three foals that were suffering from chronic cough, bilateral nasal discharge, and pneumonia.
• Upon diagnosis, it was found that the cause of these symptoms were subepiglottic cysts present in each of the foals.
• These cysts resulted in swallowing difficulties (dysphagia) leading to aspiration pneumonia, a condition occurring when food, stomach acid, or saliva is inhaled into the lungs.
• The perceived symptom of abnormal respiratory noise common in adult horses suffering from a subepiglottic cyst was also observed in the affected foals.

Origins of the Cysts

The determination of the cysts’ cause was a crucial part of the study:

• A histologic examination was conducted on the cysts removed from the three foals.
• It was suggested that the origin of these cysts was due to trauma instead of embryonic development.
• This finding contradicts the common attribution of cysts to embryonic factors, indicating that trauma could also be a significant factor in the formation of subepiglottic cysts in foals.

This research emphasizes the need for comprehensive examination in situations of chronic cough, nasal discharge, and pneumonia in foals. The presence of a subepiglottic cyst could be a possible underlying cause. More importantly, the discovery of traumatic causes, rather than embryonic, offers a fresh perspective in understanding the formation of these cysts.