Endometriosis and Adenomyosis in Didelphys: Surgical Considerations in Definitive Laparoscopic Management

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Presented by:

Mary Thompson

Affiliations:

University of Calgary

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What is Definitive Laparoscopic Management of Uterine Didelphys with Endometriosis and Adenomyosis? 

Definitive laparoscopic management of uterine didelphys with endometriosis and adenomyosis involves minimally invasive removal of duplicated uterine structures while simultaneously treating associated pelvic disease. Uterine didelphys is a congenital Müllerian anomaly characterized by two separate uterine cavities, often with two cervices and sometimes a longitudinal vaginal septum. Coexisting endometriosis, adenomyosis, adhesions, or previous surgery can make treatment particularly complex. Here’s what it involves:

  • Preoperative Imaging and Planning: Detailed imaging is used to define the duplicated uterine anatomy, cervices, vaginal anatomy, urinary tract, and extent of associated endometriosis or adhesions.
  • Systematic Pelvic Survey: The duplicated uterine structures, ovaries, fallopian tubes, bladder, bowel, ureters, and areas of endometriosis are carefully assessed.
  • Extensive Adhesiolysis: Dense adhesions are systematically divided to restore pelvic anatomy and provide access to the reproductive and surrounding structures.
  • Retroperitoneal Dissection: The retroperitoneal spaces are opened to identify important anatomical landmarks, blood vessels, and ureters.
  • Ureterolysis: The ureters are carefully identified and separated from surrounding scar tissue or endometriosis to protect them during surgery.
  • Vascular Control: The blood supply to each uterine horn is identified and controlled, accounting for potential variations associated with Müllerian anomalies.
  • Bladder and Rectal Delineation: The bladder and rectum are carefully separated from the duplicated uterine and cervical structures, particularly when adhesions or endometriosis have distorted normal tissue planes.
  • Hysterectomy: The uterine horns and cervices are systematically detached and removed according to the patient’s anatomy and planned definitive treatment.
  • Endometriosis Excision: Additional endometriotic lesions and associated fibrosis may be removed while protecting surrounding organs.
  • Final Assessment: The pelvis is inspected for bleeding and the integrity of the ureters, bladder, bowel, and other surrounding structures is confirmed.

A structured approach allows surgeons to navigate congenital anatomical differences and disease-related distortion while safely completing definitive treatment.

What are the Risks of Definitive Laparoscopic Management of Uterine Didelphys with Endometriosis and Adenomyosis?

Surgery can be particularly challenging because congenital anatomical variations, endometriosis, adenomyosis, dense adhesions, and previous surgery may all alter expected pelvic anatomy.

  • Ureteral Injury: Müllerian anomalies can coexist with urinary tract variations, while endometriosis and adhesions may further distort the ureters’ normal course.
  • Bladder Injury: Duplicated cervical anatomy, previous surgery, and adhesions can make separation of the bladder more difficult and increase the risk of injury.
  • Bowel or Rectal Injury: Dense posterior adhesions or deep endometriosis may involve the bowel or rectum and increase the risk of injury during dissection.
  • Significant Bleeding: Anatomical variations and extensive dissection can make vascular control more complex and increase the risk of hemorrhage.
  • Vascular Injury: Retroperitoneal dissection occurs near major pelvic blood vessels, which can be injured while restoring anatomy or controlling the uterine blood supply.
  • Nerve Injury: Extensive pelvic sidewall or retroperitoneal dissection can potentially affect nerves involved in bladder, bowel, or sexual function.
  • Incomplete Endometriosis Excision: Disease involving critical structures may not always be safely removable, and endometriosis-related symptoms can persist or recur.
  • Vaginal Injury or Cuff Complications: Duplicated cervices or a vaginal septum can make colpotomy and vaginal closure more complex, with potential for bleeding, infection, or healing problems.
  • Conversion to Open Surgery: Severe adhesions, unexpected anatomy, organ injury, or uncontrolled bleeding may require conversion from laparoscopy to an open procedure.
  • General Surgical Risks: Infection, blood clots, anesthesia-related complications, postoperative adhesions, and wound complications are possible.

Detailed preoperative mapping, recognition of potential urinary and vascular variations, systematic restoration of anatomy, and early identification of the ureters and other critical structures help reduce these risks during complex laparoscopic management.