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Congress: ECR25
Poster Number: C-15426
Type: Poster: EPOS Radiologist (educational)
DOI: 10.26044/ecr2025/C-15426
Authorblock: E. Gutiérrez Dorta1, B. Gutiérrez Dorta2, R. Martín-Márquez3, F. Suárez Bartolomé1, M. Fernández-Carrera Soler1; 1Ourense/ES, 2Santa Cruz de Tenerife/ES, 3CORDOBA/ES
Disclosures:
Eduardo Gutiérrez Dorta: Nothing to disclose
Bruno Gutiérrez Dorta: Nothing to disclose
Rocío Martín-Márquez: Nothing to disclose
Fernando Suárez Bartolomé: Nothing to disclose
Manuel Fernández-Carrera Soler: Nothing to disclose
Keywords: Anatomy, Pelvis, MR, Imaging sequences, Cancer, Fistula, Pelvic floor dysfunction
Learning objectives To present a pictorial review of the pelvic spaces, the pelvic diaphragm and the anorectal sphincter complex using anatomical illustrations and magnetic resonance cases.
Read more Background A thorough knowledge of pelvic structures is vital for an accurate approach to pelvic tumours, an adequate description of pathways in fistulizing perianal disease, as well as for understanding pelvic floor dysfunctions. MRI, due to its superior soft tissue contrast and multiplanar capability, is the modality of choice for detailed anatomical delineation, offering unparalleled accuracy in preoperative assessment and facilitating appropriate treatment strategies for these challenging pathologies.
Read more Findings and procedure details INTRAPERITONEAL PELVIC SPACES  Rectovesical pouch: the peritoneum lines the posterior aspect of the bladder dome, is reflected inferiorly and then ascends in relation to the anterior portion of the mesorectum. Rectouterine pouch: the female equivalent of the rectovesical pouch. The uterus and the vagina are located between the bladder and the rectum. The peritoneum lines these structures, is reflected posteriorly and then ascends towards the mesorectum. Pararectal fossae: lateral extensions of the rectouterine and rectovesical fossae. The pararectal fossae flank the lateral slopes...
Read more Conclusion MRI is essential for precise anatomical and functional evaluation of the pelvic floor and anal sphincters. This pictorial review equips radiologists with a structured approach to interpreting complex MRI findings, ultimately improving diagnostic accuracy and guiding effective management of pelvic pathologies.
Read more References 1. Jung, J Ahn HK, Huh Y. Clinical and functional anatomy of the urethral sphincter. Int Neurourol J 2012 Sep;16(3):102-6. 2. Ramírez Pedraza, N., Pérez Segovia, A.H., Garay Mora, J.A., et al. Perianal Fistula and Abscess: An Imaging Guide for Beginners. RadioGraphics 2022; 42:E208–E209. 3. Miguel Criado J, del Salto LG, Rivas PF, et al. MR imaging evaluation of perianal fistulas: spectrum of imaging features. RadioGraphics 2012;32(1):175–194. 4. Llorca FO. Sistema genitourinario. En: Anatomía humana. Barcelona: Científico médica; 1986. p. 629-774. 5. Puntambekar S,...
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