Risk factors for strangulating lipoma obstruction and lipomata in horses.
Authors: Gillen Alex, Hassel Diana, Gonzalez Sam W, Savage Victoria, Mudge Margaret, Wood Andrew, Barnes Hattie, Bauck Anje, Freeman David, Dembek Katarzyna, Gonzalez Liara M, Archer Debra C
Journal: Equine veterinary journal
Summary
# Editorial Summary: Strangulating Lipoma Obstruction and Abdominal Lipomata in Horses Strangulating lipoma obstruction remains the leading cause of small intestinal strangulation in horses and universally requires surgical intervention to prevent mortality, yet risk factors beyond basic signalment have remained poorly understood until now. This 27-month multicentre study across eight clinics in the UK and USA prospectively examined 392 horses presenting with acute colic, comparing 108 cases with strangulating lipoma obstruction and 190 with abdominal lipomata against control horses, whilst analysing signalment, adiposity, endocrine markers, and fat deposition patterns through logistic regression. Each additional year of age increased odds of strangulating lipoma obstruction by 23%, whilst males were 1.78 times more likely to develop the condition than females; clinical indicators of Equine Metabolic Syndrome emerged as the strongest risk factor, conferring a 4.77-fold increased odds of disease. The findings underscore that metabolic management—particularly preventing obesity and controlling EMS—represents a modifiable strategy to reduce lipoma-related colic risk, whilst the sex-specific differences warrant further investigation into whether adipose distribution patterns differ between male and female horses, potentially informing targeted prevention protocols for high-risk populations.
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Practical Takeaways
- •Prevention and management of equine metabolic syndrome and adiposity in middle-aged and older horses should be prioritized to reduce strangulating lipoma risk and small intestinal obstruction
- •Male horses and those showing clinical signs of EMS warrant closer monitoring and more aggressive weight management protocols
- •Hoof growth ring abnormalities may serve as a clinical indicator of lipoma risk and warrant investigation of underlying metabolic status
Key Findings
- •Age increased odds of SLO by 23% per year (OR 1.23, 95% CI: 1.17-1.30)
- •Male sex was associated with 78% increased odds of SLO compared to females (OR 1.78, 95% CI: 1.08-2.95)
- •Clinical indicators of EMS increased odds of SLO nearly 5-fold (OR 4.77, 95% CI: 2.93-7.77)
- •Lipoma formation was associated with increasing age, EMS indicators, laminitis history, and increased mesenteric and omental fat scores