Objective: To find out the histopathological distribution of adenomyosis and leiomyoma in hysterectomy specimens of abnormal uterine bleeding cases.

 Method: A retrospective study was carried out on 292 hysterectomy specimens from January 2013 to December 2016.   Data including age, symptoms and clinical  indication for hysterectomy was collected for the study from records. The specimens were stained with routine hematoxylin and eosin and examined under microscope.

.Results:Majority of patients presenting with AUB are in the perimenopausal age group (52.39%). Leiomyoma ( 60.1%) was the commonest histopathological lesion in this age group followed by adenomyosis (32.02%) and dual pathology (7.8%) respectively. As a whole leiomyoma was the commonest lesion in all cases of AUB (51.36%)

 Conclusion: Leiomyoma  was the most common cause of abnormal uterine bleeding in women of our study. Both leiomyoma and adenomyosis were found to be significant cause of AUB in perimenopausal age group.