Electrosurgical treatment of endometrial cysts in mares

A minimally invasive technique for the removal of endometrial cysts is desc ribed. Intraluminal cysts hinder the migration of the embryo through the ut erus in early pregnancy and in a later stage hinder placenta development an d hence diminish the chance of successful pregnancy. Cysts can also give ri se to false-positive results in early pregnancy tests. Endometrial cysts lo cated in the lumen can be removed surgically from the standing mare. After placement of the endoscope, a wire is placed, via the biopsy channel, aroun d the base of cyst, which is then cut through by cauterization. The cyst is removed with the help of forceps. Five barren mares with multiple cysts we re treated in this way during the anoestrous period for October to February . Three of these mares became pregnant during the next oestrus period.