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Abstract
Abnormal Uterine Bleeding (AUB) is defined as bleeding from the uterine corpus that is abnormal in volume, regularity, and/or timing. AUB is one of the most common presenting complaints that affects 10-30% of reproductive-aged women and constitutes about one-third of all outpatient gynecological visits. Causes of AUB include polyp; adenomyosis; leiomyoma; malignancy and hyperplasia; coagulopathy; ovulatory disorders; endometrium; iatrogenic; and not classified. Diagnosis of AUB depends upon detailed history and thorough examination in addition to investigations in the form of transvaginal ultrasound with special focus on the measurement of the endometrial thickness, and endometrial sampling better obtained with hysteroscopic guidance. Ultrasonography is non-invasive and is currently one of the most frequently used diagnostic techniques for evaluating the endometrium. Thus, ultrasonography has become an important supplement to a routine gynecological examination, and clinical procedures are often based on the results of this examination. However, using this technique to measure the thickness of the endometrium itself is not sufficient