Congenital renal anomalies in cloacal exstrophy: Is there a difference?

Area of Science:

• Pediatric Urology
• Developmental Biology
• Medical Genetics

Background:

• Cloacal exstrophy (CE) represents the most severe form of the epispadias-exstrophy spectrum.
• Previous research noted increased renal anomalies in classic bladder exstrophy (CBE).
• This study hypothesized a higher incidence of renal anomalies in CE due to its increased severity.

Purpose of the Study:

• To characterize renal anatomy in patients with cloacal exstrophy (CE).
• To compare renal findings between male and female CE patients.
• To assess renal anatomy in female CE patients with and without Müllerian anomalies.

Main Methods:

• Retrospective review of 75 patients from an institutional exstrophy database.
• Analysis included age, sex, and renal and Müllerian anatomy.
• Abnormalities defined based on established criteria for renal and Müllerian structures.

Main Results:

• Congenital renal anomalies were frequent in CE patients, occurring more often in males.
• Müllerian anomalies were present in 65.7% of female patients.
• Females with abnormal Müllerian anatomy were 10 times more likely to have renal anomalies (P=0.027).

Conclusions:

• CE patients exhibit a higher rate of renal anomalies compared to CBE.
• Müllerian anomalies in both sexes increase the risk of concurrent renal anomalies.
• Mesonephric duct dysfunction is proposed as a potential embryonic cause for both renal and Müllerian maldevelopment in CE.