The majority of canine cases of endometritis are of bacterial origin (usually Escherichia coli, Streptococcus spp), with a small representation of Mycoplasma spp and fungi involved in more rare cases.
Endometritis is also concurrently associated with
- Fetal membrane retention
- Cystic endometrial hyperplasia
- Post-mating infections
- Ovariectomy rather than ovariohysterectomy
- Prolonged use of progestagens such as medroxyprogesterone acetate
More rarer conditions associated with this disorder include:
The distinction between cystic endometrial hyperplasia, pyometra and endometritis is based on the stage of the reproductive cycle. Endometritis is a uterine infection that develops postpartum, when serum progesterone levels are low. In contrast, pyometra usually develops during diestrus, when progesterone levels are high.
Diagnosis of endometritis and be made presumptively from ultrasonography, but definitive diagnosis requires transcervical uterine cannulation and histological examination of biopsied tissue samples obtained via cannulation or laparoscopy.
- Penn Veterinary Medicine
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