{"paper_id":"73eb6855-80d9-4069-a6a9-5db53bb58df0","body_text":"Abstract\nThe accessory cavitated uterine mass (ACUM) is a rare obstructive malformation of the female genital tract. It is characterized by a cavitated mass with an inner lining of the endometrium filled with accumulated blood, located under the attachment of the round ligament to the uterus. The patient’s uterine cavity, fallopian tubes, and ovaries are normal. Patients with ACUM have clinical manifestations of progressive dysmenorrhea and can be diagnosed with the help of pelvic MRI and transvaginal ultrasonography. Small foci of adenomyosis could be found in the myometrium adjacent to the ACUM, but not in the rest of the uterus. Complete resection of the mass can fully relieve dysmenorrhea.\nAccess this chapter\nTax calculation will be finalised at checkout\nPurchases are for personal use only\nSimilar content being viewed by others\nReferences\nAcién P, Acién M, Fernández F, et al. The cavitated accessory uterine mass: a Müllerian anomaly in women with an otherwise normal uterus. Obstet Gynecol. 2010;116(5):1101–9.\nAcién P, Bataller A, Fernández F, et al. New cases of accessory and cavitated uterine masses (ACUM): a significant cause of severe dysmenorrhea and recurrent pelvic pain in young women. Hum Reprod. 2012;27(3):683–94.\nPaul PG, Chopade G, Das T, et al. Accessory cavitated uterine mass: a rare cause of severe dysmenorrhea in young women. J Minim Invasive Gynecol. 2015;22(7):1300–3.\nPutta T, John R, Simon B, et al. Imaging manifestations of accessory cavitated uterine mass – a rare Mullerian anomaly. Indian J Radiol Imaging. 2021;31(3):545–50.\nBedaiwy MA, Henry DN, Elguero S, et al. Accessory and cavitated uterine mass with functional endometrium in an adolescent: diagnosis and laparoscopic excision technique. J Pediatr Adolesc Gynecol. 2013;26(4):e89–91.\nShah MV, Pisat S, Jain M, et al. Role of 3D coronal ultrasound in diagnosis of accessory and cavitated uterine mass: a rare Mullerian anomaly. J Obstet Gynaecol India. 2021;71(6):633–6.\nPeyron N, Jacquemier E, Charlot M, et al. Accessory cavitated uterine mass: MRI features and surgical correlations of a rare but under-recognised entity. Eur Radiol. 2019;29(3):1144–52.\nAuthor information\nAuthors and Affiliations\nEditor information\nEditors and Affiliations\nRights and permissions\nCopyright information\n© 2026 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.\nAbout this chapter\nCite this chapter\nZhao, Z., Deng, S., Zhu, L. (2026). Accessory Cavitated Uterine Mass. In: Zhu, L., Wong, F., Brucker, S.Y. (eds) Diagnosis and Management of Female Obstructive Genital Malformations. Springer, Singapore. https://doi.org/10.1007/978-981-19-6759-7_5\nDownload citation\nDOI: https://doi.org/10.1007/978-981-19-6759-7_5\nPublished:\nPublisher Name: Springer, Singapore\nPrint ISBN: 978-981-19-6758-0\nOnline ISBN: 978-981-19-6759-7\neBook Packages: MedicineMedicine (R0)","source_license":"CC0","license_restricted":false}