Spirocerca lupi in the ovary of a dog

This report presents an aberrant migration of Spirocerca lupi to the ovary of dog for the first time. A Labrador retriever bitch was presented to the clinic with the history of decreased appetite over a month and vaginal discharge for a week. Vaginal examination revealed mild sero-sanguinous discharge. The abdominal ultrasonography revealed unclear, uneven thickening of uterine endometrium with anechoic contents in the uterine horn suggestive of cystic endometrial hyperplasia. During mid-ventral ovariohysterectomy, in the right ovary, moving bright pink to red coloured coiled worm was noticed. The worm was identified as S. lupi based on the morphological characters.