Pancreatic pseudocysts have been reported in dogs and cats, whereas necrotic mass lesions of the pancreas and pancreatic abscesses have been reported only in dogs. These conditions appear to be sequelae of pancreatitis. The clinical signs associated with pancreatic pseudocysts, necrosis, and abscesses are nonspecific and similar to those of pancreatitis. Diagnosis is made by abdominal ultrasonography combined with fine-needle aspiration or surgical exploration. Pseudocysts can be managed surgically or by ultrasound-guided percutaneous aspiration. Guidelines for managing pancreatic abscesses and necrotic mass lesions have not been determined but can include both surgical intervention and medical therapy. Mortality rates are higher with necrotic masslesions of the pancreas and pancreatic abscesses than with pancreatic pseudocysts.
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