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Duplication or Septation of the Bladder

Complete Duplication of Bladder and Urethra

Bladder duplication is a uncommon malformation with 45 reported cases. There are two bladders, each with its own urethra and ureter (Salle, 2000). In addition, there are often duplication anomalies of the external genitalia or the gastrointestinal tract. Treatment may consist in complex reconstruction of the genitourinary tract and aims to protect the upper urinary tract. Due to the rarity of the disease, treatment must be individualized.

Incomplete duplication of the Bladder

The duplication of the cranial portion of the bladder leads to a sagittal septum, the trigonum and the singular urethra show no anomalies. If treatment is rarely necessary, the smaller portion of the bladder is removed with reimplantation of the ureter.

Further Septation of the Bladder

Transverse septation is also possible (congenital hourglass bladder).

References

Salle, J. L.; Sibai, H.; Rosenstein, D.; Brzezinski, A. E. & Corcos, J. Urethral duplication in the male: review of 16 cases.
J Urol, 2000, 163, 1936-1940

  Deutsche Version: Septen und Doppelbildung der Harnblase