Cystoscopy in Urethral Stricture
Cystoscopy is a camera test that allows a urologist to look directly inside the urethra and bladder. It can reliably confirm whether a urethral stricture is present, identify its exact distal edge and assess associated findings such as lichen sclerosus, stones or bladder pathology. However, a standard cystoscope often cannot pass through a tight stricture, so cystoscopy may not show the full length of narrowing. RGU remains important for reconstructive mapping. Flexible cystoscopy is commonly performed with local anaesthetic gel and usually takes only a few minutes.
What is cystoscopy?
A thin telescope is passed gently through the urinary opening. Flexible cystoscopes bend around the natural curve of the urethra and are commonly used for office-based diagnostic procedures. Rigid cystoscopy may be used in the operating room or when a procedure is planned.
Why is cystoscopy used in urethral stricture?
- To confirm that a narrowing truly exists.
- To inspect the urethral lining and distal edge of the scar.
- To distinguish urethral stricture from bladder-neck or post-prostatectomy anastomotic stenosis.
- To look for stones, false passages or bladder disease.
- To assess selected postoperative recurrences.
- To combine with antegrade cystoscopy through a suprapubic tract in complex pelvic fracture cases.
How should you prepare?
For office flexible cystoscopy, fasting is usually unnecessary. You may be asked about urine infection symptoms, allergies and blood-thinning medicines. If sedation or anaesthesia is planned, follow the specific fasting and medication instructions provided.
What happens during the test?
The urethral opening is cleaned and local anaesthetic lubricating gel is placed in the urethra. The flexible scope is advanced under direct vision. If a stricture is encountered, the urologist notes its site, appearance and approximate calibre. Force should not be used to push a standard scope through a tight narrowing merely to inspect the bladder.
Can a very small scope be used?
Yes. In selected cases, small-calibre ureteroscopes can pass a narrowing that a standard flexible cystoscope cannot. This can allow assessment of the proximal urethra and bladder without dilating the scar, but the decision depends on the purpose of the examination.
What cystoscopy can and cannot tell you
| Cystoscopy is good for | Cystoscopy is limited for |
|---|---|
| Directly confirming the narrowing | Measuring the full length of a tight stricture |
| Assessing mucosal appearance / LS | Showing the proximal urethra if the scope cannot pass |
| Identifying bladder stones or lesions | Mapping a pelvic fracture distraction defect by itself |
| Checking a postoperative anastomosis | Replacing RGU/VCUG in all reconstructive planning |
Does cystoscopy hurt?
Most men feel pressure, brief burning or an urge to urinate. Flexible cystoscopy with lubricant and local anaesthetic is usually well tolerated. Discomfort may be greater if the meatus or urethra is very narrow or inflamed.
Risks
- Temporary burning when urinating.
- Small amount of blood in urine.
- Urinary infection.
- Rare urinary retention.
- Urethral trauma if instrumentation is forced through a tight narrowing.
Cystoscopy after urethroplasty
Cystoscopy can detect early recurrent narrowing, including some recurrences before symptoms become obvious. EAU follow-up guidance now supports an early postoperative anatomical assessment in appropriate patients and then risk-adjusted surveillance. Not every asymptomatic wide-calibre recurrence needs immediate treatment.
What happens if a stricture is found?
The next step depends on length, location, prior treatment and symptoms. Cystoscopy confirms the diagnosis; RGU/VCUG may then be used to map the segment before deciding between observation, selected VIU or urethroplasty.
What to bring for consultation
- Previous RGU/MCU images.
- Earlier cystoscopy report or video if available.
- Uroflowmetry and PVR.
- Records of VIU, dilatation or urethroplasty.
- Urine culture if infection has been a problem.
What cystoscopy adds – and what it may miss
Cystoscopy gives information no X-ray can provide: the urologist sees the meatus, urethral lining, scar ring, prostate/bladder neck and bladder directly. It can confirm whether a narrowing is passable, identify stones or hair in a reconstructed urethra and distinguish a urethral stricture from a bladder-neck stenosis.
Its limitation is length measurement. Once the tip of the scope reaches a tight narrowing, the surgeon may see only the distal face of the scar. Passing a very tight segment simply to “measure it” can itself dilate or injure the urethra. This is why reconstructive planning for a significant stricture often combines cystoscopy with RGU and, when needed, VCUG.
The diagnostic intent should be clear before the procedure. In some patients cystoscopy is a quick office confirmation; in others it is performed under anaesthesia together with antegrade assessment through a suprapubic tract. The test is most useful when it answers a specific anatomical question rather than being repeated automatically.
FAQs
Can cystoscopy itself worsen a stricture?
Gentle diagnostic cystoscopy is usually safe. Forcing an instrument through a tight stricture can cause trauma, which is why the scope is not simply pushed through resistance.
Can cystoscopy replace RGU?
Not always. Cystoscopy confirms the narrowing, while RGU is usually better for mapping length before reconstruction.
Do I need anaesthesia?
Most flexible diagnostic cystoscopies use local anaesthetic gel. Rigid or operative cystoscopy may require spinal or general anaesthesia.
What if the cystoscope cannot pass?
That finding itself confirms a significant narrowing. Imaging can show the urethra beyond it without forceful passage.
Why might cystoscopy be done after urethroplasty even if I feel well?
Some recurrent narrowings are initially asymptomatic. Early anatomic assessment can help stratify future recurrence risk.
Related reading
- RGU Test for Urethral Stricture
- Uroflowmetry in Urethral Stricture
- Follow-Up After Urethroplasty
- Urethral Stricture: Symptoms, Causes and Treatment
- Can Urethral Stricture Damage the Bladder or Kidneys?
- Can Urethral Stricture Affect Sexual Function?
- Urologist in Latur
References
- European Association of Urology. EAU Guidelines on Urethral Strictures: Diagnostic Evaluation, 2026 https://uroweb.org/guidelines/urethral-strictures/chapter/diagnostic-evaluation
- European Association of Urology. EAU Guidelines on Urethral Strictures: Follow-up, 2026 https://uroweb.org/guidelines/urethral-strictures/chapter/followup
- European Association of Urology. EAU Guidelines on Urethral Strictures, 2026 https://uroweb.org/guidelines/urethral-strictures
- American Urological Association. Urethral Stricture Guideline (2023 amendment) https://www.auanet.org/guidelines-and-quality/guidelines/urethral-stricture-guideline