Granulomatous colitis associated with small strongyle larvae in a horse.

This research focuses on a specific case of a horse experiencing chronic weight loss, which was eventually diagnosed as granulomatous colitis caused by small strongyle larvae. The article presents the clinical and autopsy findings and suggests that such cases might be managed effectively using fenbendazole or ivermectin.

Understanding Granulomatous Colitis and Small Strongyles

• Granulomatous Colitis is an inflammatory condition affecting the horse’s colon, characterized by the formation of granulomas (small nodules) in response to chronic irritation. This study suggests that one of the causes of the disease could be the mucosal stages of cyathostomes, also known as small strongyles.
• Small Strongyles, or cyathostomes, are one of the most common types of worms that infect horses. They can form cysts within a horse’s intestines, which may lead to complications such as diarrhea, weight loss, increased serum globulins, and hypoalbuminemia – a condition marked by low levels of albumin in the blood.

Finding and Diagnosis

• In this case, the horse exhibited symptoms such as weight loss and intermittent diarrhea. Laboratory analysis showed hypoalbuminemia and increased serum globulins. Additionally, the fecal egg count was low, indicating the presence of strongyle larvae.
• These symptoms and findings suggested the possibility of granulomatous colitis, and this diagnosis was confirmed through a necropsy.

Treatment options

• One proposed treatment for granulomatous colitis due to small strongyle larvae includes larvicidal doses of fenbendazole or ivermectin. Both are common antiparasitic drugs used in equine medicine.
• Fenbendazole is a broad-spectrum anthelmintic, effective against many types of worms, including small strongyles. Ivermectin is a widely-used antiparasitic that also has activity against a variety of parasites including small strongyles.

Summary of the Paper

• Critical weight loss in horses could be a sign of granulomatous colitis, which might be caused by small strongyle larvae. Additional symptoms to watch out for include intermittent diarrhea, hypoalbuminemia, increased serum globulins, and low fecal egg counts.
• If such a diagnosis is confirmed, treatment could potentially be attempted with fenbendazole or ivermectin, both of which have shown to be effective against small strongyles.
• The paper provides a valuable case study in understanding granulomatous colitis and the role of small strongyle larvae in its development, offering insights for effective diagnosis and treatment.