Equine Internal Medicine Q&A 11

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A two-day-old Thoroughbred colt was observed to posture frequently in the manner depicted in the first image. A sonogram of the caudoventral abdomen, longitudinal view, was obtained.

Question	Answer		Article
What is this foal exhibiting, and what are the differential diagnoses?	Stranguria. Differentials include: ruptured bladder or urachus (with uroperitoneum), bladder atony and urachal diverticulum.		Link to Article
What is the diagnosis based on the sonographic exam?	Grossly intact bladder with a urachal diverticulum. There is no free abdominal fluid as would be seen with uroperitoneum.		Link to Article