Closed-Cervix Pyometra with Massive Purulent Accumulation in Uterine Horns in a 3-year-old Labrador retriever: A case report

Abstract

Pyometra is a hormonally mediated, life-threatening uterine disorder of intact bitches, commonly occurring during diestrus. Closed-cervix pyometra is particularly severe due to retention of purulent material, absence of vaginal discharge, and rapid progression to toxemia. A 3-year-old intact female Labrador retriever was presented with owner suspected pregnancy based on abdominal enlargement and nesting behaviour. Ultrasonography ruled out pregnancy and revealed markedly distended uterine horns containing echogenic purulent material with a closed cervix. Emergency ovariohysterectomy was performed following stabilization. Intraoperatively, both uterine horns were grossly distended with thick, foul-smelling pus. The infected uterus was removed intact without spillage. Postoperative recovery was uneventful. This case highlights the importance of differentiating pregnancy and pseudopregnancy from pyometra and reinforces ovariohysterectomy as the definitive treatment for closed-cervix pyometra.