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Original Article | Obstetrics and Gynecology | Volume 15 Issue 3, March 2026 | Pages: 1319 - 1320 | India
Accessory Cavitated Uterine Myometrium in a Perimenopausal Woman Presenting as a Large Uterine Mass with Severe Dysmenorrhea: A Case Report
Abstract: Accessory Cavitated Uterine Myometrium (ACUM) is a rare M?llerian anomaly characterized by an isolated endometrium-lined cavity within the myometrium. It commonly presents in young women with severe dysmenorrhea and is often misdiagnosed as adenomyosis or leiomyoma. We report a case of a 43-year-old woman presenting with chronic lower abdominal pain and severe dysmenorrhea for three years. She had regular menstrual cycles with prolonged and heavy bleeding. Clinical examination revealed a mobile abdominopelvic mass corresponding to 16?18 weeks gestational size. Imaging suggested a localized intramyometrial lesion. Surgical exploration revealed a well-defined cavitated lesion within the myometrium containing altered blood. Histopathological examination confirmed the presence of an endometrial lining with surrounding smooth muscle hyperplasia, consistent with ACUM. This case is notable for its atypical age of presentation and highlights the importance of considering ACUM in the differential diagnosis of dysmenorrhea associated with uterine enlargement. Surgical management resulted in significant symptomatic relief.
Keywords: Accessory cavitated uterine myometrium, ACUM, dysmenorrhea, M?llerian anomaly, adenomyosis mimic, uterine mass
How to Cite?: Dr. Khazi Naziya Parveen, Dr. Nafeesa Farheen, Dr. Rashmi Basantsingh, "Accessory Cavitated Uterine Myometrium in a Perimenopausal Woman Presenting as a Large Uterine Mass with Severe Dysmenorrhea: A Case Report", Volume 15 Issue 3, March 2026, International Journal of Science and Research (IJSR), Pages: 1319-1320, https://www.ijsr.net/getabstract.php?paperid=SR26322114652, DOI: https://dx.dx.doi.org/10.21275/SR26322114652