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A condition resembling human sclerosing encapsulating peritonitis was identified in 3 young large-breed dogs. All 3 dogs had similar clinical signs: ascites, vomiting, and excessive borborygmus. The condition was discovered at laparotomy and confirmed histologically. Laparotomy revealed a sac-like formation totally or partially occupying the peritoneal cavity. The predominant histologic abnormality was marked peritoneal and serosal fibrosis. None of the dogs had a favorable response to treatment, and euthanasia was performed because of development of abdominal distention.

Severe hypophosphatemia (i.e., serum phosphorus concentration below 1 mg/dl) occurs infrequently in veterinary patients. It is most often associated with diabetic ketoacidosis in small animals. Phosphate is necessary for the production of 2,3 diphosphoglycerate (2,3-DPG) and adenosine triphosphate (ATP); both are important for normal cellular metabolism. Consequences of severe hypophosphatemia may include hemolytic anemia, seizures, altered mentation, cardiomyopathy, and skeletal muscle weakness. Parenteral phosphate therapy is necessary in most cases of severe hypophosphatemia.