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Malignant urachal lesions.

C A Sheldon, R V Clayman, R Gonzalez

    The Journal of Urology
    |January 1, 1984
    PubMed
    Summary
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    Urachal carcinoma, a rare cancer, often presents with non-specific symptoms like hematuria. Complete surgical removal, including cystectomy and umbilectomy, is crucial for preventing recurrence of this uncommon malignancy.

    Area of Science:

    • Urologic Oncology
    • Surgical Pathology

    Background:

    • Urachal carcinoma is a rare malignancy arising from the urachus, a remnant of the allantois.
    • Its anatomical location allows for significant local extension before diagnosis, complicating treatment.
    • Adenocarcinoma is the most common histological subtype, often producing mucus aiding diagnosis.

    Purpose of the Study:

    • To review the diagnostic features and treatment strategies for urachal carcinoma.
    • To emphasize the importance of complete local tumor control in surgical management.
    • To provide guidance on the surgical approach for suspected urachal tumors.

    Main Methods:

    • Review of clinical presentation, diagnostic modalities, and treatment outcomes for urachal carcinoma.
    • Emphasis on characteristic imaging findings, such as stippled calcification.

    Related Experiment Videos

  • Discussion of endoscopic visualization and preoperative biopsy for diagnosis.

    • Main Results:

    • Common symptoms include hematuria and abdominal mass; stippled calcification is a key diagnostic sign.
    • Preoperative diagnosis is often achievable via endoscopic biopsy.
    • Incomplete local control during initial surgery is a primary cause of treatment failure and local recurrence.

    Conclusions:

    • En bloc cystectomy with umbilectomy and pelvic lymphadenectomy is recommended for most urachal carcinomas to ensure local control.
    • Undertreatment or inadequate initial surgery significantly reduces salvageability due to high rates of local recurrence.
    • Bladder adenocarcinomas located on the dome or anterior wall should be treated as urachal tumors due to diagnostic challenges.