Guinea Pig Ovarian Cysts Study Guide

Overview and Clinical Importance

Ovarian cystic disease is the most common reproductive tract disorder in female guinea pigs (sows). Studies report prevalence rates of 66% to 76% in intact sows between 1.5 and 5 years of age. This condition significantly impacts animal welfare through hormonal imbalances, associated uterine pathology, and potential life-threatening complications if left untreated.

Understanding ovarian cysts in guinea pigs is essential for the NAVLE because this condition represents a key example of species-specific reproductive pathology, requires knowledge of both surgical and medical management options, and demonstrates the importance of recognizing subtle clinical signs in prey species that naturally hide illness.

Relevant Anatomy and Physiology

Female Reproductive Anatomy

The female guinea pig possesses paired ovaries located in the cranial abdomen, positioned caudal to the kidneys. Unlike dogs and cats, guinea pigs have short, relatively inelastic ovarian suspensory ligaments, which makes surgical exteriorization more challenging. The reproductive tract includes a bicornuate uterus with two uterine horns, a uterine body, and a single cervix. Female guinea pigs have a single pair of inguinal mammary glands.