# Non-muscle-invasive vs muscle-invasive bladder cancer (NMIBC / MIBC)

Source: https://onco.cc/terms/nmibc-vs-mibc/  
OnCo record `nmibc-vs-mibc` (Term). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

Bladder cancer is divided by whether it has grown into the bladder's muscle wall. Before that, it is treated inside the bladder; after, the bladder is usually removed or irradiated.

## Summary

NMIBC (~75% at diagnosis: Ta, T1, CIS) is managed with TURBT and intravesical therapy, stratified as low, intermediate, or high risk. MIBC (T2-T4) needs radical cystectomy or trimodality bladder preservation, now with perioperative systemic therapy (NIAGARA, EV-303/304). Metastatic disease is treated systemically. Upper-tract urothelial carcinoma (renal pelvis, ureter) shares biology and most drugs.

## Fields

- Kind: Term
- Last checked: 2026-09-07
- Also known as: muscle invasive; MIBC; non-muscle-invasive; non-muscle invasive; NMIBC; NMIBC risk group; high-risk NMIBC; T1 high-grade; BCG-naive; BCG-exposed; muscle-invasive

## Sources

- Wikipedia: https://en.wikipedia.org/wiki/Bladder_cancer
- ClinicalTrials.gov NCT03732677: NIAGARA: https://clinicaltrials.gov/study/NCT03732677
- ClinicalTrials.gov NCT04660344: IMvigor011: https://clinicaltrials.gov/study/NCT04660344

## Connected records

- terms: [Intravesical therapy (BCG and bladder instillations)](https://onco.cc/terms/intravesical-therapy/), [Organ preservation (watch-and-wait, bladder-sparing, larynx preservation)](https://onco.cc/terms/organ-preservation/), [Radical cystectomy](https://onco.cc/terms/cystectomy/), [Transurethral resection of bladder tumour (TURBT)](https://onco.cc/terms/turbt/)
- cancers: [Bladder & urothelial cancer](https://onco.cc/cancers/urothelial/)
- fronts: [Surgery & Interventional](https://onco.cc/fronts/surgery/)
- technologies: [Cystoscopy, blue-light imaging & TURBT](https://onco.cc/technologies/cystoscopy-turbt/), [Intravesical therapy (BCG, chemotherapy, devices, gene and viral therapy)](https://onco.cc/technologies/bcg-and-intravesical-therapy/)
- trials: [IMvigor011](https://onco.cc/trials/imvigor011/), [NIAGARA](https://onco.cc/trials/niagara/), [POTOMAC](https://onco.cc/trials/potomac/)
- drugs: [Intravesical BCG](https://onco.cc/drugs/bcg-intravesical/)

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