Related Experiment Video
Updated: May 29, 2026

Evaluation of Biomaterials for Bladder Augmentation using Cystometric Analyses in Various Rodent Models
Published on: August 9, 2012
Colorectal anomalies in patients with classic bladder exstrophy
Andrew A Stec1, Nima Baradaran, Christine Tran
1Division of Pediatric Urology, The Brady Urological Institute, The Johns Hopkins Medical Institutions, Baltimore, MD 21287, USA. andrew.stec@jhmi.edu
Children with classic bladder exstrophy (CBE) have a 1.8% rate of colorectal anomalies, primarily imperforate anus. Early evaluation and treatment are crucial for managing these significant associated conditions.
Area of Science:
- Pediatric Surgery
- Congenital Anomalies
- Urology
Background:
- Classic bladder exstrophy (CBE) is a complex congenital condition affecting the genitourinary system.
- Associated gastrointestinal malformations in CBE patients are not well-characterized.
- Understanding these comorbidities is vital for comprehensive patient care.
Purpose of the Study:
- To determine the incidence and types of colorectal anomalies in children with CBE.
- To assess the significance of these anomalies in the context of CBE.
Main Methods:
- Retrospective review of a database of 1044 patients with bladder exstrophy-epispadias-cloacal exstrophy complex.
- Detailed medical record review for 676 patients diagnosed with CBE.
- Identification and extraction of history for patients with gastrointestinal malformations.
Main Results:
- 12 out of 676 patients with CBE (1.8%) had a concomitant colorectal anomaly.
- Imperforate anus was the most common anomaly (8 patients).
- Other anomalies included severe rectal stenosis (2 patients) and congenital rectal prolapse (2 patients).
Conclusions:
- Isolated colorectal anomalies occur in 1.8% of children with CBE, a 72-fold increase over the general population.
- Despite being uncommon, these anomalies carry significant morbidity.
- Prompt evaluation and treatment of both genitourinary and colorectal issues are essential.
Related Concept Videos
Anatomy of the Genitourinary System II: Bladder and Urethra
Assessment of the Rectum and Anus
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
Diverticular Disease of the Colon
Imaging Studies VI: Voiding Cystourethrography and Cystography
Microbiota of the Urogenital Tract
Urinary Bladder
In males, the bladder is situated in front of the rectum, while in females, it is positioned anterior to the vagina and uterus. The bladder floor contains an inverted triangular area called the trigone, defined by the two ureteric...

