Endometrial polyps associated with endometrial hyperplasia in an obese bonnet monkey (Macaca radiata): a case report.

BACKGROUND: A 10-year-old, female bonnet monkey (Macaca radiata) showed abnormal menstrual cycle length with heavy menstrual bleeding for 6-8 days. METHODS: Uterine ultrasound and histological examinations of endometrium by endometrial biopsy. RESULTS: An ultrasound examination of the uterine cavity showed presence of an enlarged polypoid mass. Further endometrial histology confirmed the presence of simple endometrial hyperplasia. CONCLUSIONS: We report for the first time that endometrial polyp is associated with endometrial hyperplasia in obese bonnet monkey.