Clinical features and outcome of dogs and cats with gastrointestinal pneumatosis: 30 cases (2010–2021)

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OBJECTIVES: To describe the presentation, etiology, and outcome of dogs and cats diagnosed with gastrointestinal pneumatosis (GP). DESIGN: Retrospective study. SETTING: Three referral institutions. ANIMALS: Twenty-six dogs and 4 cats. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: The most common sites of GP were the stomach (n = 19), followed by the colon (n = 8) and small intestine (n = 2). One case had pneumatosis of both the stomach and the colon. GP was most commonly associated with gastrointestinal disease in dogs (18/26 [69%]) and cats (3/4 [75%]), with common diagnoses including gastric dilatation and volvulus (n = 5), acute hemorrhagic diarrhea syndrome (n = 4), and gastrointestinal ulceration (n = 4). Of the 4 cases of gastrointestinal ulceration, 3 were dogs with a history of glucocorticosteroid or nonsteroidal anti-inflammatory drug administration and vomiting and diarrhea. Six of 30 cases (20%), all of which were dogs, were determined to have a surgical indication for exploratory celiotomy, although not solely on the basis of diagnosis of GP. Five cases underwent exploratory celiotomy, of which 1 (20%) survived to hospital discharge. Of the medically managed cases, 13 of 24 (54%) survived to hospital discharge. Overall, 14 of 30 cases (47%) survived to hospital discharge. CONCLUSIONS: GP is an uncommon diagnostic imaging finding that is associated with a variety of disease processes. Its development is often related to primary gastrointestinal diseases. In the absence of other surgical disease, exploratory celiotomy based solely on the diagnosis of GP is unlikely to be indicated.

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