Summary A 12‐year‐old Thoroughbred broodmare was presented for laparoscopic removal of an abnormal ovary. Rectal examination and ultrasound revealed firm attachment of the enlarged right ovary to the ventral pelvis and right abdominal wall, and gas accumulation within the right ovary. Laparoscopic examination revealed extensive adhesion formation between the abnormal ovary, ispilateral uterine horn, ventral pelvis and the right abdominal wall. A flank laparotomy was then performed to improve visualisation of the area. Due to contamination of the abdomen during attempts to detach adhesions, the complexity of the structures involved and the poor prognosis for further reproduction, the decision was made to subject the mare to euthanasia. Post‐mortem evaluation revealed a large encapsulated abscess of the right ovary, with a small, linear wire foreign body within the centre of the abscess.

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