Annals of Coloproctology

Case Report

Benign proctology,Rare disease & stoma

Imaging Diagnosis of Perianal Leiomyoma: A Case Report: Enrique González-Díaz, Blanca García Cengotitabengoa, Ana Belen Dominguez Carbajo, Camino Fernández Fernández, A. Fernández Corona; Ann Coloproctol. 2021;37(Suppl 1):S58-S62. Published online June 9, 2021; DOI: https://doi.org/10.3393/ac.2020.10.13.1

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A leiomyoma is a benign mesenchymal neoplasm that usually develops where smooth muscle is present. In this report, we present the case of a 75-year-old woman who sought medical attention due to pelvic organ prolapse and urinary incontinence, and without defecatory symptoms. Both pelvic floor ultrasound and magnetic resonance imaging (MRI) examination showed a well-defined mass in the ischioanal fossa, eventually diagnosed as a perianal leiomyoma. It is considered a rare entity because of its location involving the anal sphincter and clinical features. We describe the ultrasonographic and MRI findings of this perianal leiomyoma, together with differential diagnoses and immunohistochemical characterization.

Citations

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Angioleiomyoma originating from the ano-rectal wall presenting as a perineal mass: a case report
Sayali Valiyeva, Elena Cicerone, Elisabetta Iacobelli, Gina R. Quaglione, Renato Pietroletti
International Journal of Colorectal Disease.2025;[Epub] CrossRef
A Case of Rectal Leiomyoma with Myxoid Degeneration
玉婷施
Advances in Clinical Medicine.2025; 15(03): 399. CrossRef

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