duodenitis-proximal jejunitis (dpj), also known as anterior or proximal enteritis is a clinical syndrome that is characterized by edema and inflammation of the duodenum and proximal jejunum, excessive fluid and electrolyte secretion into the small intestine and large volume of enterogastric reflux. in january 2003, a 15-year-old anglo arab stallion has been used for jumping and breeding, develo...