
01/17/2025
And the answer is…..
This week's Diagnose-a-case answer is...
C) INGUINAL HERNIA
Minutes after arrival the foal started to roll and not willing to stand. These are signs characteristic of colic. An ultrasound was placed on the swelling and noted small intestine under the skin, which is abnormal. This case involves a direct inguinal hernia, in which the small intestine becomes positioned under the skin through a tear in the vaginal tunic. A diagnosis was made by palpating the swollen area and using an ultrasound.
Inguinal-scrotal hernias are typically soft tissue swellings on one side of the scrotal area; they are rarely bilateral. Most inguinal-scrotal hernias are indirect, that is the intestine passes through the vaginal ring into the vaginal tunic Initial management is directed at repeated manual reduction of the scrotal contents . Successful manual reduction is typically achieved in the first month. Foals with a irreducible, direct inguinal hernia will present with signs of colic several hours after birth (4 to 48 hours). This is caused by rupture of the common vaginal tunic, such that the jejunum migrates into the subcutaneous space associated with the sc***um and prepuce. This condition is life-threatening and is considered a surgical emergency. Our surgery department performed surgery to correct the hernia, and the foal was discharged without complications. Surgical correction of a direct inguinal hernia involves making an incision into the abdomen and sc***um region. Once the intestine is back in the abdomen, it will be thoroughly assessed. Sometimes, resections are necessary due to extensive injury to the small intestine’s blood supply. A unilateral castration is usually performed, and the inguinal ring is closed.
The schematic image provided is from the "Color Atlas of Diseases and Disorders of the Foal" (Saunders), edited by Dr. Siobhan McAuliffe, a graduate from Hagyard's Internal Medicine Residency Program, and Dr. Nathan Slovis, one of the Internal Medicine doctors at Hagyard. Note the tear in the vaginal tunic.
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