These images were taken from a 12 year old Thoroughbred-cross
gelding (male castrated) equitation show horse that had abdominal
surgery (displaced and impacted colon) approximately 10 days prior
to taking these images. The horse had been regularly dewormed (every
60 days) with Equimax® (ivermectin and praziquantel). Gastroscopic
examination of the distal (30 to 40 cm) esophagus and non-glandular
stomach showed these focal lesions (see images). The horse never
demonstrated any clinical signs of reflux esophagitis or any reflux
although he was noted by the owner that he was a little slow to eat
his hay at some meals.
Any thoughts on what may be causing these lesions?
