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Persistent Müllerian Duct Syndrome: Understanding the Challenges
Irene Chua1, Naeem Samnakay1,2
1Department of Paediatric Surgery, Perth Children's Hospital, Western Australia, Australia.
Insights
Persistent Müllerian duct syndrome (PMDS) is a rare condition where males (46,XY) have Müllerian duct structures. This case highlights successful surgical management and long-term surveillance for this rare disorder.
Area of Science:
- Endocrinology
- Pediatric Surgery
- Genetics
Background:
- Persistent Müllerian duct syndrome (PMDS) is a rare autosomal recessive disorder in 46,XY males, characterized by the presence of Müllerian duct remnants.
- It presents challenges in diagnosis and management due to its rarity and varied clinical manifestations.
Observation:
- A case of an infant diagnosed with PMDS at 6 months for bilateral impalpable testes is described.
- Laparoscopy revealed Müllerian structures (uterus, fallopian tubes) and bilateral intra-abdominal testes.
- Gonadal biopsy confirmed normal testicular tissue.
Findings:
- The infant underwent successful bilateral two-stage Fowler-Stephens orchidopexies, with preservation of Müllerian remnants to maintain testicular vascularity.
- At 7-year follow-up, testes are intrascrotal and normal on palpation, with no clinical concerns regarding the Müllerian remnant.
- Surveillance via ultrasound and MRI showed no adverse events related to the Müllerian remnant.
Implications:
- This case underscores the importance of surgical intervention and long-term surveillance in managing PMDS.
- It highlights the need for further research into fertility preservation, malignancy risk, and standardized management protocols for PMDS.
- The findings contribute to the limited understanding of long-term outcomes and optimal care strategies for patients with PMDS.
Abstract:
Persistent Müllerian duct syndrome (PMDS) is a rare autosomal recessive condition defined by the presence of Müllerian duct-derived structures in an otherwise normally masculinized phenotypical and genotypical (46,XY) male. We describe the case of an infant diagnosed with PMDS, managed and followed up for 7 years. The diagnosis of PMDS was made at laparoscopy at 6 months of age for investigation and management of bilateral impalpable testes. A Müllerian structure resembling a uterus with bilateral fallopian tube-like structures was seen in the pelvis, along with bilateral intra-abdominal testes. Gonadal biopsy confirmed normal testicular tissue. The child underwent successful bilateral two-stage Fowler-Stephens orchidopexies. The Müllerian remnant was preserved to maintain testicular vascularity. At the most recent follow-up, the testes are intrascrotal and normal on palpation. There have been no clinical symptoms or concerns with the Müllerian remnant during surveillance with ultrasound and MRI. To date, there are less than 300 cases described in the medical literature, with limited consensus on management. We reflect on challenges the condition poses, including fertility preservation in PMDS, testicular and Müllerian malignancy risk in PMDS, and optimal management and surveillance of PMDS.
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