Monorquidismo em um equino Brasileiro

Abstract

As monorchidism is rarely reported in horses and no case report has been found in the national literature, the objective was to describe a case in an eight-years old Brazilian adult horse. Using an inguinal approach in the left side, an intact tunica vaginalis was found containing the tail of a malformed epididymis, the ductus deferens and a thin vascular pedicle but without evidence of testicle. Histological and hormonal exams confirmed the absence of testicular tissue. In conclusion, monorchidism, although rare, can also affect national horses.