Exuberant granulation tissue in the stomach of a horse.

The research revolves around a specific case study of a horse suffering from granulation tissue in its stomach, which led to severe weight loss, diarrhea and other abnormal conditions.

Case Background

• The research discusses the case of a 4-year-old stallion that was examined due to a 2-month history of not eating properly and losing weight. The horse also developed diarrhea about a month prior to the examination.
• The horse displayed abnormal clinical findings such as extreme thinness, diarrhea, swelling under the skin of the belly, noticeable enlargement of the mesenteric lymph node, and a large mass in the front left part of the abdomen.

Laboratory Findings and Actions Taken

• Laboratory testing revealed significant findings. The horse had anemia with a packed cell volume (ratio of blood cells in blood) of 0.21 liters/liter. Normal range is typically around 0.30-0.45 liters/liter, so this was significantly low.
• Additionally, the horse exhibited hypoalbuminemia with 16 g/liter. This means the horse had lower than normal levels of albumin protein in its blood, which can result in edema as it did in this case.
• Xylose malabsorption was also noted. This condition refers to the inability to properly absorb xylose, a sort of sugar, in the small intestine. This condition can lead to diarrhea, as experienced by the horse.
• Given the severity of its condition, and likely poor prognosis, the horse was euthanized.

Necropsy Results

• Upon performing the necropsy after euthanizing the horse, the researchers found a pendunculated mass weighing 10.5 kg composed of granulation tissue within and attached to the horse’s stomach. This type of tissue normally forms during the healing process but, when it grows too much, it can cause problems as it did in this case.
• Distributed throughout the small intestine, there was villous atrophy noted. This means that the small, finger-like projections that line the small intestine and facilitate nutrient absorption were wasting away.
• The exact cause for this gastric mass of granulation tissue was not determined at the end of the investigation.