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Introduction: Abnormal uterine bleeding is frequently a symptom of gynecologic disease. Recently, a cesarean section scar diverticulum was found to be a cause of persistent and irregular uterine bleeding.
A 42-year-old multigravid woman with prior cesarean deliveries developed persistent irregular vaginal bleeding in association with an anterior extrauterine cystic mass detected by ultrasound. Based on pelvic magnetic resonance imaging (MRI), cesarean section scar diverticulum was suspected to be the cause of the uterine bleeding. Total laparoscopic hysterectomy was performed and histological examination identified a diverticulum lined with endometrium at a low uterine segment.
Uterine scar defects can be associated with abnormal uterine bleeding. Cesarean section scar diverticulum is rare. However, it should be differentiated from other pelvic masses. Surgical treatment may be necessary to treat atypical uterine bleeding and dysmenorrhea.
