T-shaped malformation of the ventral colon in a Thoroughbred filly with colic.

This research article reports the case of a 4-month old Thoroughbred filly that was diagnosed and successfully treated for a novel congenital issue in her ventral colon, which had caused abdominal pain.

Background and Case Presentation

• The young Thoroughbred filly at the heart of this study came to medical attention due to issues of abdominal pain, a condition also known as colic in horses.
• A surgical exploration of her abdomen, known as an exploratory laparotomy, revealed a unique T-shaped malformation in her ventral colon. This type of malformation has not been reported before, and it is theorized to be a congenital defect that arose due to problems with the formation of the mesocolon, a supportive tissue structure that connects the colon to the wall of the abdomen.

Treatment and Outcome

• The treatment strategy involved a surgical procedure, specifically the resection (removal) and anastomosis (surgical connection) of the large colon.
• This surgery was effective in resolving the filly’s abdominal pain, with no further episodes reported during a follow-up period that lasted 12 months.
• However, a complication arose in the form of acute dehiscence of the linea alba. This condition refers to the failure of a wound to heal properly along the linea alba, a fibrous structure in the midline of the abdomen. This complication required additional surgery to correct.

Conclusion and Implications

• This case is the first reported instance of a T-shaped malformation in the ventral colon, marking a novel addition to the body of knowledge about possible congenital defects in horses.
• The successful treatment of the horse further provides a potential guide for future veterinary cases involving similar issues. These novel findings can further our understanding of equine congenital defects, and contribute to improved surgical treatment options for these conditions.