Bilobed testis

Bilobed testis, also known as incomplete unilateral polyorchidism, is a very rare variant in children.

The exact etiology is unknown but is thought be a form of incomplete polyorchidism. It has been proposed that bilobed testis results from incomplete division of the urogenital ridge 1-3.

  • lobulated testis with normal echotexture
  • hemi-testicular structure of similar echogenecity of testis

The treatment depends on any underlying abnormality and the evidence is conflicting. Some papers suggest conservative management and imaging follow up (particularly if cancer suspected)4,5. While others recommend surgical intervention of the affected testis and orchiopexy of the contralateral testis due to the significant risk of testicular torsion 6.

Anatomy: Abdominopelvic
Share article

Article information

rID: 25841
System: Urogenital
Section: Anatomy
Synonyms or Alternate Spellings:
  • Bilobed testicle
  • Bilobed testes
  • Incomplete unilateral polychordism

Support Radiopaedia and see fewer ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.