Anterocentral Compartment (Bladder, Round Ligament)

In: Imaging of Endometriosis: A Comparative Guide of US, MRI and Surgery · 2025 · pp. 87–105 · doi:10.1007/978-3-031-82750-1_5 · W4410899083
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This chapter reviews endometriosis affecting the urinary bladder and round ligament, detailing its imaging characteristics and surgical considerations.

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This chapter reviews endometriosis in the anterocentral compartment, emphasizing deep infiltrative involvement of the urinary bladder and the round ligament, including their epidemiology, typical presentations, and imaging features used for diagnosis and surgical planning. It describes bladder endometriosis as occurring in less than 1% of people with endometriosis, infiltrating the bladder muscularis in an outside-in pattern often from the serosal surface, with frequent associations such as prior cesarean delivery and coexistence with other pelvic lesions, while noting diagnostic imaging roles for transvaginal ultrasound and MRI and giving characteristic imaging appearances. It also covers round ligament endometriosis as a rare, anatomically variable entity with distinct clinical and imaging findings and surgical implications. The chapter does not provide new primary data and is limited to a narrative overview rather than quantitative comparative analysis, though it cites consensus and guideline sources. This paper is centrally about endometriosis — specifically deep infiltrative endometriosis of the anterocentral compartment affecting the bladder and the round ligament.

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Abstract

Deep infiltrative endometriosis of the anterior compartment is an uncommon but clinically significant form of endometriosis, affecting approximately 6% of cases. This chapter explores endometriosis in the anterocentral compartment, focusing on its involvement of the urinary bladder and round ligament. Bladder endometriosis occurs in less than 1% of all patients with endometriosis, where endometrium-like tissues infiltrate the bladder’s muscularis layer in an outside-in pattern, typically originating at the serosal surface. This condition frequently occurs in patients with a prior history of cesarean delivery, coexists with other pelvic lesions, and may present with symptoms such as dysuria and hematuria. Imaging plays a pivotal role in diagnosis and surgical planning, with transvaginal ultrasonography (TVUS) and magnetic resonance imaging (MRI) serving as essential diagnostic tools, offering high specificity for lesion detection and mapping. On ultrasound, bladder lesions appear as hypoechoic lesions with stellate margins and can contain hyperechoic foci. MRI shows these lesions as T1 and T2 hypointense lesions, which may contain T1 and T2 hyperintense foci. Adherence to adjacent structures can be present with scarring. Round ligament endometriosis is a rare manifestation, involving both intra- and extra-pelvic portions, each characterized by distinct clinical presentations, imaging findings, and surgical implications. Accurate imaging assessment is crucial for guiding surgical approaches and optimizing treatment outcomes. This chapter provides a comprehensive overview of imaging protocols, diagnostic characteristics, and surgical considerations for managing endometriosis involving the bladder and round ligament, emphasizing the importance of precise evaluation for effective treatment. Access this chapter Tax calculation will be finalised at checkout Purchases are for personal use only Similar content being viewed by others

References

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Springer, Cham. https://doi.org/10.1007/978-3-031-82750-1_5 Download citation DOI: https://doi.org/10.1007/978-3-031-82750-1_5 Published: Publisher Name: Springer, Cham Print ISBN: 978-3-031-82749-5 Online ISBN: 978-3-031-82750-1 eBook Packages: MedicineMedicine (R0)

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