"Not Yet Classified” Abnormal Uterine Bleeding in Reproductive-age Women

Objective: Abnormal uterine bleeding (AUB) is a common problem among women in reproductive age. Not always is their cause easy to establish and in those cases not yet classified abnormal uterine bleeding is diagnosed. The aim of this study was the analysis of the clinical and histopathological results of the endometrium evaluation in women with initially diagnose of not yet classified bleeding who had undergone curretage, because of prolongated bleeding.
Methods: The study was conducted among 78 women aged between 21 and 42 years with prolongated uterine bleeding. Not yet classified uterine bleeding diagnose was based on patient history and physical examination. The percentage of the histopathological findings that confirmed the initial diagnose was evaluated and two groups of women, those with normal and abnormal endometrium in the aspects of clinical data (age, parity, BMI (body mass index) and menstruation bleeding pattern were compared.
Results: The initial diagnose of non classified uterine bleeding was confirmed only in 42.3% of women. The further results of abnormal uterine bleeding were as follows: endometrial polyps in 30.8%, hormonal imbalance in 14%, hyperplasia of the endometrium in 6% and endometritis in 4%. The only statistically significant parameter was frequent occurrence of regular than irregular menstrual cycles in a group of women with non classified uterine bleeding.
Conclusion: Histopathological examination of the endometrium enabled to find the cause of bleeding in more than a half of women with initially recognized non classified uterine bleeding. Besides the higher incidence of regular cycles in the group of women with confirmed not yet classified bleeding, no differences depending on age, parity, BMI, length and amount of menstrual bleeding were observed among women with abnormal uterine bleeding.