EN
The ovarian remnant syndrome (ORS) is a condition that occurs when functional ovarian tissue is left in an abdominal cavity of a bitch or queen after an ovariohysterectomy (OH). This may result in clinical signs of estrus, pseudopregnancy or high concentrations of progesterone and estradiol in the blood serum without the mentioned clinical signs. This syndrome was described in queens, bitches and a woman. The article discusses the results of a hormonal assay evaluation, complete blood count and serum biochemical profile. It also describes the first case of chronic vaginal prolapse as a complication of ovarian remnant syndrome in a bitch.