Summary Laparoscopic cryptorchidectomy was successfully performed in 15 standing or recumbent horses. In 3 horses, owners believed that castrations had been performed, but the horses had retained stallion-like behavior. Successful removal of undescended testes in these horses stopped this behavior. Laparoscopy offered excellent visualization of the structures of the vaginal ring and facilitated removal of the abdominally located testis. The internal and external inguinal rings were not invaded, thus the chance of serious complications that may result during open cryptorchidectomy procedures was minimized.
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Fischer et al. (1992) studied this question.