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A nationwide survey of diagnostic procedures for abnormal uterine bleeding in Japan
Yoshikazu Kitahara1, Osamu Hiraike2, Hiroshi Ishikawa3
1Department of Obstetrics and Gynecology, Gunma University Graduate School of Medicine, Maebashi, Japan.
Aim:
To clarify the diagnostic process of the causative disease of abnormal uterine bleeding (AUB) in Japan according to the International Federation of Gynecology and Obstetrics AUB diagnostic system.
Methods:
Patients diagnosed with AUB were included in a nationwide survey of AUB conducted during any 2-week period between December 2019 and January 2020. The second survey included information on patient background, AUB symptoms, examinations for diagnosing AUB, the order in which they were performed, and the causative diseases of AUB.
Results:
Correspondence analysis showed an association between hormonal testing, hysterosalpingography, and magnetic resonance imaging (MRI) in patients with amenorrhea, and heavy menstrual bleeding was strongly correlated with various examinations, such as coagulation tests, pelvic MRI, and endometrial cytology or biopsy. The results also indicated that each AUB causative disease can be diagnosed based on a specific examination profile.
Conclusion:
We clarified the process of diagnosing the causative disease of AUB in our country and determined that it was mainly diagnosed by imaging and pathological examination in cases of structural disease. The high rate of AUB-E and the low rate of AUB-C are possibly associated with specific examination trends in Japan. The results of this study will be useful for the development of a standard protocol for AUB diagnosis in our country.
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