Study details outcomes in 20 dogs with pleuroperitoneal hernia

Version 2

A newly published multicenter retrospective analysis in the Journal of Small Animal Practice offers a closer look at 20 dogs diagnosed with pleuroperitoneal diaphragmatic hernia between 2009 and 2026, a rare condition that can blur the line between surgical emergency and incidental finding. The study reports that most dogs presented with gastrointestinal and respiratory signs, the stomach was the organ most often herniated, and surgical correction generally produced favorable outcomes with low recurrence. (lifescience.net)

That matters because pleuroperitoneal hernia is an uncommon subset of canine diaphragmatic hernia. In dogs, diaphragmatic hernias are more often traumatic, while congenital forms include pleuroperitoneal, peritoneopericardial, and hiatal hernias. Prior surgical references describe pleuroperitoneal hernias as rare and typically involving a dorsolateral diaphragmatic defect, often presumed congenital when diagnosed in young animals or in patients without a clear trauma history. (onlinelibrary.wiley.com)

The new series helps fill that evidence gap. According to the publication summary, 19 dogs underwent successful herniorrhaphy, while one dog was euthanized during surgery because of extensive jejunal necrosis associated with mesenteric volvulus. Post-operative complications occurred in 47% of surgical patients, but all dogs that underwent surgery survived to discharge, and only one recurrence was reported. The authors also note that some cases were discovered incidentally during diagnostic imaging or surgery rather than through overt clinical signs. (lifescience.net)

The broader literature helps explain why that variability matters in practice. ACVS notes that chest radiographs remain central to diagnosis, with ultrasound, contrast studies, and CT used as needed, and that surgery is the definitive treatment once the patient is stable. Emergency intervention may be needed when the stomach herniates and becomes gas-distended in the thorax, because that can sharply worsen respiratory distress by limiting lung expansion. (acvs.org)

Recent case-based literature also suggests the condition may be underrecognized, especially in chronic or incidental presentations. A 2023 Veterinary Record Case Reports paper described laparoscopic repair of an incidentally diagnosed pleuroperitoneal diaphragmatic hernia in an 11-year-old French bulldog, underscoring that not every case presents as an obvious emergency and that minimally invasive repair may be feasible in selected patients. Older reports, including a 2015 paper on laparoscopic mesh repair and a 2018 report of gastrothorax in five Cavalier King Charles Spaniels, also point to the condition’s varied presentation and likely congenital basis in at least some dogs. (bvajournals.onlinelibrary.wiley.com)

Why it matters: For veterinary professionals, this study gives added weight to a practical message: pleuroperitoneal diaphragmatic hernia should stay on the differential when dogs present with overlapping respiratory and gastrointestinal signs, unexplained thoracic imaging findings, or episodic signs that don’t fit more common disease patterns. The favorable discharge survival reported here is reassuring, but the complication rate also suggests these are not simple cases. Surgical planning, perioperative monitoring, and attention to compromised or strangulated viscera remain critical, particularly when gastric involvement or volvulus is present. (lifescience.net)

The study may also help clinicians counsel pet parents more confidently. While evidence remains limited because the condition is rare, this series aligns with the broader veterinary literature showing that diaphragmatic hernias can do well after repair when identified and managed appropriately. At the same time, incidental diagnosis does not necessarily mean inconsequential disease, especially if herniated organs create intermittent respiratory or gastrointestinal compromise. (lifescience.net)

What to watch: The next step is the full paper itself. Clinicians will want to see the detailed breakdown of signalment, imaging findings, surgical technique, defect location, chronicity, and follow-up duration, along with any clues about which dogs were most likely to experience complications or recurrence. (lifescience.net)