Ultrasonographic localisation and surgical findings in a Persian cat with suspected ovarian remnant syndrome

Recurrent oestrous behavior following gonadectomy indicates residual functional ovarian tissue. A three-year-old female Persian cat weighing 2.4 kg presented with malodorous purulent vulvar discharge, emesis, and decreased appetite and water intake. The owner reported post-sterilisation recrudescence of estrus and receptivity. Abdominal ultrasonography demonstrated an anechoic fluid collection caudal to the urinary bladder and a 0.5-cm anechoic cystic structure caudal to the left kidney. Exploratory laparotomy identified a cystic lesion at the left ovarian pedicle and an inflamed uterine stump. Residual reproductive tissue was surgically excised, and management included antimicrobial and corticosteroid therapy. This case utilized transabdominal ultrasonography to detect ectopic or remnant reproductive tissue and guide surgical resolution of ovarian remnant syndrome complicated by uterine stump inflammation.