Ann. Méd. Vét., 2007, 151 (4), pp 247-256 Ovarian cysts in cattle. Part 1 : definitions, symptoms and diagnosticHANZEN C., BASCON F., THERON L., LOPEZ-GATIUS F.Abstract :
An ovarian cyst is classically defined as a fluid-filled space larger than 24 mm, that can persist for more than 7 to 10 days in the absence of a corpus luteum.
The frequenc y of this pathology is between 7 to 15%.
Contrary to the follicular cyst, the luteinised follicular cyst is
characterized by the presence in its periphery of a luteal tissue.
The ovarian cyst is a dynamic structure. Its presence doesn't
interfere with the follicular waves but can modify their characteristics.
An ovarian cyst results from or induces an absence of ovulation.
Ovarian cyst diagnosis and especially the differential diagnosis between follicular and luteal cysts necessarily imply the use of ultrasonography to
clearly identified their diameter and thickeness. The ultrasonography
sensibility is better than that of transrectal palpation.
Progesteronemia interpretation supposes the preliminary definition of a threshold. Behavioural(anoestrus or nymphomany), uterine(tonicity of the uterine horns) or vaginal (mucus) abnormalities can help to direct the diagnosis. Get the PDF Contact person : christian.hanzen@ulg.ac.be |