DefinePK

Abstract

A 9-year-old Arabian mare was admitted due to emaciation and infertility. Transrectal palpation revealed an enlarged left ovary. Ultrasonographic examination (US) showed a heterogeneous image. Blood samples were obtained for biochemical and hormonal analysis. The affected ovary was surgically removed. The mare’s cycle was regular, evidenced by estradiol 17? and progesterone levels. After gross- and histopathology, the diagnosis of mature cystic teratoma (MCT) was confirmed. The elevated liver enzymes gradually decreased following the operation coinciding with the mare’s improved body condition. The mare became pregnant two months later. Finally, MCT can cause problems with the mare’s general health and fertility. The clinical and US characteristics suggested ovarian neoplasm; however, gross- and histopathology are critical for the final diagnosis.