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Related Experiment Videos

Extraperitoneal paravesical spaces: CT delineation with US correlation.

Y H Auh, W A Rubenstein, M Schneider

    Radiology
    |May 1, 1986
    PubMed
    Summary

    The extraperitoneal spaces around the urinary bladder are analogous to the retroperitoneal spaces around the kidneys. Understanding these spaces aids in diagnosing fluid collections using imaging techniques.

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    Area of Science:

    • Anatomy
    • Radiology
    • Surgical Anatomy

    Background:

    • The extraperitoneal space surrounding the urinary bladder exhibits a lamellar structure, similar to the retroperitoneal space around the kidneys.
    • Key structures like the bladder, urachus, and obliterated umbilical arteries are situated within the perivesical space, enclosed by the umbilicovesical fascia.

    Purpose of the Study:

    • To elucidate the anatomical organization of the extraperitoneal spaces around the urinary bladder.
    • To establish analogies between these spaces and the retroperitoneal compartments.
    • To detail the computed tomographic (CT) and ultrasound appearances of these spaces in various clinical scenarios.

    Main Methods:

    • Detailed sectional anatomical analysis of the extraperitoneal spaces.
    • Correlation of anatomical findings with computed tomographic (CT) and ultrasound imaging.

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  • Examination of normal anatomy, patients with extraperitoneal fluid collections, and a cadaver model with injected fluid.

    • Main Results:

    • The perivesical space, analogous to the perinephric space, contains the bladder and related structures within the umbilicovesical fascia.
    • A larger prevesical space, analogous to the anterior pararenal space, is located anterior and lateral to the umbilicovesical fascia.
    • The posterior perivesical space, analogous to the posterior pararenal space, contains the lower uterine segment or seminal vesicles and is separated from the rectum by the cul-de-sac and rectovaginal/rectovesical septum.

    Conclusions:

    • The extraperitoneal spaces around the urinary bladder share anatomical similarities with the retroperitoneal spaces.
    • Understanding these spaces and their imaging characteristics is crucial for diagnosing and managing extraperitoneal fluid collections.