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Müllerian remnant causing bladder outlet obstruction.

E S Tank, D A Hatch

    Journal of Pediatric Surgery
    |January 1, 1986
    PubMed
    Summary
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    Persistent Müllerian Duct Remnants (PMDR) can cause bladder outlet obstruction, though rarely. This report details two cases of severe obstruction due to dilated PMDR, emphasizing diagnostic considerations in affected patients.

    Area of Science:

    • Urology
    • Pediatric Surgery
    • Developmental Biology

    Background:

    • Persistent Müllerian Duct Remnants (PMDR) are rare congenital conditions where Müllerian duct derivatives persist in males.
    • Bladder outlet obstruction is an uncommon complication of PMDR, typically presenting with voiding dysfunction.

    Observation:

    • Two pediatric cases presented with significant bladder outlet obstruction.
    • Massive dilatation of PMDR was identified as the cause of obstruction in both patients.
    • Associated anomalies included hypospadias and undescended gonads.

    Findings:

    • Dilated PMDR can lead to severe bladder outlet obstruction, contrary to the generally low incidence.
    • Urethral obstruction distal to the prostatic urethra can precipitate gross enlargement of PMDR.

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  • Prompt identification of PMDR is crucial in male patients with obstructive voiding symptoms and related congenital anomalies.

    • Implications:

    • This highlights the importance of considering PMDR in the differential diagnosis of bladder outlet obstruction in pediatric males.
    • Early recognition and management of PMDR-related obstruction can prevent long-term complications.
    • Further research into the pathogenesis of PMDR dilatation is warranted.