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Related Experiment Videos

Fetal pseudoascites: further anatomic observations.

B E Hashimoto, R A Filly, P W Callen

    Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine
    |March 1, 1986
    PubMed
    Summary

    Fetal pseudoascites, a sonolucent band on ultrasound, is commonly seen in normal pregnancies. This finding represents the fetal abdominal wall musculature, not intraperitoneal fluid.

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    Area of Science:

    • Obstetrics and Gynecology
    • Fetal Imaging
    • Medical Ultrasound

    Background:

    • A sonolucent band near the fetal abdominal wall is often observed during routine obstetrical ultrasound.
    • This finding, termed pseudoascites, can be mistaken for fetal intraperitoneal fluid.
    • Accurate differentiation is crucial for correct fetal assessment.

    Purpose of the Study:

    • To identify the sonographic anatomy of fetal pseudoascites.
    • To differentiate pseudoascites from actual fetal intraperitoneal fluid.
    • To clarify the significance of this common ultrasound finding.

    Main Methods:

    • Sonographic examination of 53 consecutive fetuses.
    • Detailed observation of the sonolucent band associated with the fetal abdominal wall.
    • Anatomical correlation of sonographic findings.

    Main Results:

    • Pseudoascites was identified in 45 out of 53 fetuses examined.
    • Sonographic observations confirmed the pseudoascites band represents the fetal abdominal wall musculature.
    • Distinct sonographic features differentiate pseudoascites from fetal ascites.

    Conclusions:

    • Fetal pseudoascites is a frequent and normal finding on obstetrical ultrasound.
    • It is anatomically identified as the fetal abdominal wall musculature.
    • Understanding this distinction prevents misdiagnosis of fetal ascites.

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