Preoperative MRI Classification May Not Predict Symptom Relief after Uterine Artery Embolization in Patients with Adenomyosis

Objective: To investigate the association between magnetic resonance imaging (MRI) classification and symptom relief after uterine artery embolization (UAE) in patients with adenomyosis. Methods: Totally, 73 patients with symptomatic adenomyosis who underwent UAE were retrospectively analyzed. Preoperative MRI classification was defined as: type I, high signal on both T2-weighted images (T2WI) and T1-weighted images (T1WI); type III, high signal only on T2WI, and type II, high signal on neither T1WI nor T2WI. Dysmenorrhea was measured with the visual-analog scales and the degree of menorrhagia was measured according to the number of sanitary pads used in one menstrual cycle. Dysmenorrhea and menorrhagia were measured before UAE and 12 months after UAE. Results: The number of the type I, II, III cases was 23, 37, and 13, respectively. The baseline characteristics of the three groups exhibited no significant difference. The alleviation rates of dysmenorrhea among type I, II, III cases were 73.9%, 89.2%, and 84.6%, respectively (P=0.455). The alleviation rates of menorrhagia for type I, II, III were 69.6%, 78.4%, and 92.3%, respectively (P=0.714). Conclusion: Pre-procedure MRI classification and symptom relief after UAE exhibited no significant association. UAE has a favorable mid-term control on dysmenorrhea and menorrhagia among patients with adenomyosis. Preoperative MRI classification might not indicate symptom relief. More research is needed before changing clinical practice. Similar content being viewed by others

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