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Preureteric vena cava

S L Morganstern, W H Seery, A T Cole

    Urology
    |June 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Preureteric vena cava, a rare congenital anomaly, can cause hydronephrosis and ureteral deformities. This case highlights unusual presentations that may lead to misdiagnosis, emphasizing the need for accurate identification of this vascular anomaly.

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    Area of Science:

    • Urology
    • Embryology
    • Vascular Anatomy

    Background:

    • Preureteric vena cava (PVC) is a rare congenital anomaly where the left renal vein courses anterior to the aorta before joining the inferior vena cava.
    • It typically presents with hydronephrosis and a characteristic "S or fishhook" deformity of the ureter.
    • Unusual clinical presentations can complicate diagnosis, potentially leading to misinterpretation as other conditions.

    Observation:

    • This report details a case initially misdiagnosed as ureteropelvic junction obstruction.
    • The patient presented with symptoms suggestive of obstruction, leading to an incorrect initial diagnosis.
    • Diagnostic imaging and subsequent review revealed the underlying preureteric vena cava anomaly.

    Findings:

    • The anomaly was confirmed through diagnostic imaging, revealing the aberrant course of the vena cava.

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  • The "S or fishhook" deformity of the ureter was noted at the third and fourth lumbar vertebrae.
  • Embryological review provides insight into the developmental origins of this vascular anomaly.

    • Implications:

    • Accurate diagnosis of preureteric vena cava is crucial to avoid inappropriate surgical interventions for conditions like ureteropelvic junction obstruction.
    • Understanding the embryology of preureteric vena cava aids in recognizing its potential presentations.
    • This case underscores the importance of considering rare congenital anomalies in the differential diagnosis of pediatric hydronephrosis.