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Congress: ECR25
Poster Number: C-11725
Type: Poster: EPOS Radiologist (educational)
Authorblock: M. Takeuchi, K. Matsuzaki, M. Harada; Tokushima/JP
Disclosures:
Mayumi Takeuchi: Nothing to disclose
Kenji Matsuzaki: Nothing to disclose
Masafumi Harada: Nothing to disclose
Keywords: Genital / Reproductive system female, Pelvis, MR, MR-Diffusion/Perfusion, MR-Spectroscopy, Diagnostic procedure, Neoplasia, Tissue characterisation
Learning objectives To illustrate the various imaging manifestations of benign uterine leiomyomas and to differentiate leiomyomas from sarcomas using advanced MRI techniques to address the therapeutic strategy.
Read more Background Leiomyomas, common benign mesenchymal tumors of the uterus, are typically diagnosed through ultrasonography or MRI. However, degenerative changes and histologic subtypes can significantly affect MRI findings. This exhibit provides an overview of the wide range of clinical and MRI manifestations of leiomyomas, correlating with pathological findings. We also review advanced MRI techniques for diagnosis and therapeutic strategies based on WHO 2020 and FIGO 2018 guidelines.
Read more Findings and procedure details [Leiomyoma] Benign mesenchymal tumor of uterine smooth muscle cells Most common uterine neoplasm affecting middle-aged women Usually asymptomatic, w/ no treatment required May cause abnormal bleeding /anemia, pain, menstrual disorder, subfertility, and bulk symptoms related to mass effects (constipation, frequent urination) Hormonally dependent: develops after menarche; regresses after menopause; may rapidly grow and bleed during pregnancy Often multiple (> 75%) Well-circumscribed mass w/ bulging, firm, whorled, white cut surface Composed of spindle cells arranged in intersecting fascicles  [Typical Imaging] Plain X-P/CT: Soft tissue mass; Often w/ mulberry-like calcification US: Solid, well-defined,...
Read more Conclusion Uterine leiomyomas are common but sometimes difficult to diagnose due to the variety of imaging and clinical manifestations. To recognize MRI features and advanced techniques is helpful for the diagnosis and differentiation from uterine sarcomas, which may be effective for therapeutic strategy
Read more References The WHO Classification of Tumours Editorial Board (ed.) WHO Classification of Tumours: Female Genital Tumours, 5th edn. World Health Organization, Lyon, 2020. Kurman RJ, et al. (eds.) Blaustein's Pathology of the Female Genital Tract, 7th edn. Springer, Cham, 2019. Munro MG, et al.; FIGO Menstrual Disorders Committee. The two FIGO systems for normal and abnormal uterine bleeding symptoms and classification of causes of abnormal uterine bleeding in the reproductive years: 2018 revisions. Int J Gynaecol Obstet 143:393–408, 2018. Murase E, et al. Uterine...
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