AUTHOR=Hu Qicai , Guo Chunlei , Chen Qing , Zhang Wei , Wang Huifang , Wei Weixia TITLE=ACUM, an easily underdiagnosed cause of dysmenorrhea—A case report JOURNAL=Frontiers in Medicine VOLUME=Volume 11 - 2024 YEAR=2024 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2024.1308299 DOI=10.3389/fmed.2024.1308299 ISSN=2296-858X ABSTRACT=This report described 3 cases with long-term severe dysmenorrhea and were referred to our department for medical help. The diagnosis of Accessory cavitated uterine malformation (ACUM) was considered based on symptoms and ultrasound/MRI features. After that, combined hysteroscopic surgery and laparoscopic surgery was performed, no complications occurred during surgery or in post-operative period. Always keep ACUM in mind in patients with severe dysmenorrhea not responding to medical management. Surgery is the most effective treatment for this anomaly.