Suspected Bartholin gland cystic-like structure and associated Corynebacterium pseudotuberculosis in a 1-year-old Nigerian dwarf doe.

Abstract

A 1-year-old intact Nigerian dwarf nulliparous doe was presented to the Auburn University College of Veterinary Medicine, Large Animal Teaching Hospital in March 2024 for evaluation of recurrent perivulvar masses of 3 mo duration. Transcutaneous ultrasonographic examination of the labia and ventrolateral peri-vulvar area was carried out. This examination revealed a horizontally oriented, bilobed mass on the dorsal left labia majora, and a separate mass located directly below the ventral vulvar commissure. The dorsal mass was separated by a vertical septum, with the medial aspect of this mass effacing the vestibular mucosa. Both masses were surgically removed and submitted for histopathology. Histopathology revealed an ulcerated/pseudocystic lesion with chronic active inflammation, abscessation, and ulceration. Cystic Bartholin gland was the most likely differential diagnosis based on the collective findings. Aerobic culture resulted in heavy growth of Corynebacterium pseudotuberculosis. The existence of Bartholin glands in goats is debated. This case offers insight to the ambiguous nature of these glands. Two months after surgery the owners reported no adverse clinical signs or regrowth of perivulvar masses. Key clinical message: This report emphasizes regional reproductive anatomy and clinical application in the goat. Corynebacterium pseudotuberculosis can be present in uncharacteristic locations. Any abscessed structure in a goat should be treated as infectious.