Small intestinal strangulation caused by Meckel’s diverticulum in a horse.

The research article describes a case where a horse suffered strangulation of its small intestine due to a specific condition known as Meckel’s diverticulum.

Understanding Meckel’s Diverticulum

• Meckel’s diverticulum is a congenital abnormality that occurs in some mammals, including horses. It’s an outpouching or bulge in the lower part of the small intestine, specifically, the ileum.
• This abnormality can lead to complications, depending on its size and location. The most significant risk is that the diverticulum could wrap around the intestine, causing a blockage or strangulation.

Necropsy Findings

• In the case of the 12-year-old Quarter Horse mare in question, a necropsy revealed that the Meckel’s diverticulum had looped around a portion of the mare’s small intestine, cutting off blood flow and causing the tissue to die.
• The affected intestinal segment was a blind-end portion originating from the antimesenteric border of the ileum. This means it was a section of the intestine that had no exit, or “blind end”, attached to the side of the intestine that faces away from the mesentery (the connective tissue that anchors the small intestine to the back of the abdominal wall).
• The Meckel’s diverticulum had not just affected the ileum, but also wrapped itself around and caused strangulation of 3.5 m of the jejunum, another section of the small intestine. This would have severely limited the mare’s ability to digest and absorb food.

Implications of the Findings

• This case study is an example of the serious complications that can arise from Meckel’s diverticulum in horses. The consequences are more severe when the diverticulum loops around a large section of the intestine, leading to strangulation and necrosis (tissue death).
• The findings warn veterinarians to consider Meckel’s diverticulum as a possible cause when treating horses showing signs of intestinal distress or blockage. A prompt diagnosis can be crucial for effective treatment and the survival of the horse.