bladder neck contracture
Narrowing of the bladder neck opening resulting in urinary obstruction, often occurring after prostate surgery.
Full Definition
Bladder neck contracture (BNC) is a pathological narrowing of the bladder neck that impedes normal urinary flow and can cause significant voiding dysfunction. This complication most commonly occurs following radical prostatectomy, with an incidence of 1-10% depending on surgical technique and patient factors. BNC results from excessive scar tissue formation at the vesicourethral anastomosis site where the bladder is reconnected to the urethra. Symptoms include decreased urinary stream, incomplete bladder emptying, and potential urinary retention. Diagnosis is typically made through cystoscopy and urodynamic studies. Treatment options include dilation, transurethral incision, or reconstruction, with success rates varying by severity and treatment approach.
Usage
Usage note: Distinguish from urethral strictures which occur distal to the bladder neck.
In Context
- "Cystoscopy revealed significant bladder neck contracture requiring transurethral incision." — Operative report
- "The patient developed symptomatic bladder neck contracture six months post-prostatectomy." — Follow-up note