Perimenopausal abnormal uterine bleeding

Abnormal uterine bleeding is a frequent symptom in the perimenopause. Causes are numerous, ranging from physiological reactions due to decreasing/unstable ovarian function to premalignant and malignant conditions. Benign findings such as endometrial polyps and myomas increase with age, leading to more abnormal uterine bleeding in the perimenopause. Cervical and vaginal causes of abnormal uterine bleeding should be excluded by speculum examination. Sexually transmitted diseases or pregnancy should be ruled out. Measurement of haemoglobin and iron levels, human chorion gonadotropin and thyroid hormones are relevant in selected cases. Transvaginal ultrasound is an ideal first step for the evaluation of perimenopausal abnormal uterine bleeding. Saline or gel contrast sonohysterography improves the diagnostic accuracy. Based on the ultrasound findings, invasive procedures such as endometrial biopsy or hysteroscopy can be planned. Once premalignant and malignant causes are excluded, the necessity for treatment can be evaluated in collaboration with the patient. Heavy menstrual bleeding causing anaemia will need immediate treatment. In less severe cases and in intermenstrual bleeding, expectant management can be considered. Hormonal treatment, such as oral progestogens, combined oral contraceptives or insertion of the levonorgestrel intrauterine system, may be a possibility if anovulatory bleeding is interfering with quality of life. The amount of bleeding can be reduced both by antifibrinolytic and non-steroidal anti-inflammatory drugs, progestogens and the levonorgestrel intrauterine system. Focal intrauterine lesions such as endometrial polyps or submucous myomas may require operative hysteroscopic procedures. Endometrial ablation or endometrial resection are good choices in selected cases, but some women will need a hysterectomy to treat their abnormal uterine bleeding in perimenopause.