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Related Experiment Videos

Incidental hydronephrosis on bone scintigraphy: sonographic verification.

S Balachandran, T L Angtuaco, H R Shah

    The Journal of Urology
    |October 1, 1985
    PubMed
    Summary

    Bone scintiscans can suggest hydronephrosis, but renal sonography is needed for confirmation. Less than half of suspected hydronephrosis cases are confirmed, indicating caution is needed when interpreting bone scan results.

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    Area of Science:

    • Nephrology
    • Radiology
    • Nuclear Medicine

    Background:

    • Bone scintiscans are utilized to evaluate various conditions, including potential renal abnormalities.
    • Renal sonography is a primary imaging modality for diagnosing hydronephrosis.

    Purpose of the Study:

    • To assess the accuracy of bone scintiscans in detecting hydronephrosis compared to renal sonography.
    • To determine the rate of false positive and false negative findings for hydronephrosis on bone scintiscans.

    Main Methods:

    • A study was conducted on 98 kidneys in 55 patients.
    • Both bone scintiscans and renal sonography were performed on all participants.
    • Findings from both imaging modalities were compared to evaluate diagnostic accuracy.

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    Main Results:

    • Out of 29 kidneys with suspected hydronephrosis on bone scintiscans, only 12 were confirmed by renal ultrasound.
    • The remaining 17 cases showed discrepancies attributed to factors like extrarenal pelves, stasis, or obstruction.
    • No false negative readings for hydronephrosis were observed on bone scintiscans when assessed by ultrasound criteria.

    Conclusions:

    • Bone scintiscans are reliable for ruling out hydronephrosis (no false negatives).
    • Caution is advised when diagnosing hydronephrosis based solely on bone scintiscans due to a high rate of false positives.
    • Renal sonography is essential for confirming suspected hydronephrosis after bone scintiscans.