DIAGNOSTIC AND THERAPEUTIC IMPLICATIONS OF PARTIALLY LUTEINIZED FOLLICULAR CYSTS IN CATTLE

This study examined the value ultrasonography in diagnosing partially luteinised follicular cysts and monitoring the transition of histologi cally and endocrinologically confirmed ovarian cysts from the original state to luteal cysts. Of partially luteinised follicular cyst, only 7 (58.3%) were diagnosed by a 7.5 Mhz transrectal transducer. Using th e 5 Mhz transducer only classical luteal cysts with a grey echogenic r im of luteal tissue more than 3 mm thick were diagnosed correctly. Pro gesterone concentrations in the cystic fluid of luteal cysts were sign ificantly increased (3,596.7 ng/ml) compared to the fluid of follicula r cysts with pal tial luteinisation (116-482.4 ng/ml), The findings of comparable concentrations of progesterone in the cystic fluid questio n the need for the treatment with PGF2 alpha analogues in or der to re duce luteal tissue in partially luteinised follicular cysts. Because o f this finding ultrasonic diagnosis is of limited value, However, ultr asonography does have a diagnostic role when luteal cysts have a high progesterone concentration and detectable ultrasound signs.