# A national incidental gallbladder cancer pathway: histology for every gallbladder, referral within two weeks, re-resection by eight

Source: https://onco.cc/ideas/idea-gbc-national-incidental-cancer-pathway/  
OnCo record `idea-gbc-national-incidental-cancer-pathway` (Idea). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

About six in every thousand gallbladders removed for stones contain cancer. A written pathway that sends every specimen to the pathologist, refers every T1b or deeper cancer to a liver surgeon within two weeks and books the second operation within eight would turn a lottery into a system.

## Summary

Incidental cancer is 0.6 percent of cholecystectomies (Pyo 2020). In the Netherlands only 24 percent of eligible patients were re-resected (2020); in the UK CAPBIL cohort 67.7 percent had liver resection (2026), with the reasons for the rest unknown. Observational data favour re-resection at four to eight weeks (Ethun 2017) though a 2026 individual patient data meta-analysis found timing did not change survival, so the pathway should prioritise completion over speed. Selective histology policies risk missing cancers (Khan 2021 systematic review). A national pathway with audit, the model the NHS uses for other two-week-wait cancers, needs no new drug and could be measured through existing registries.

## Fields

- Kind: Idea
- Last checked: 2026-09-24
- Tags: gallbladder-evidence
- Hypothesis: A mandated pathway (routine histology, two-week referral of T1b or deeper incidental cancers to a hepatobiliary multidisciplinary team, re-resection within eight weeks where fit) will raise the proportion of eligible patients re-resected to above 80 percent and be associated with longer disease-free survival at national level.
- Rationale: The intervention with the largest observed survival association in incidental gallbladder cancer is completing the radical operation; the largest documented failure is not reaching it.
- Proposed test: Stepped-wedge implementation across hepatobiliary networks with registry-linked outcomes (re-resection rate, interval, R0 rate, disease-free survival), benchmarked against the CAPBIL 2014 to 2022 baseline.
- Maturity: early-clinical
- Actor: clinic

## Sources

- de Savornin Lohman et al.: re-resection rate 24 percent in the Netherlands (Ann Surg Oncol 2020): https://europepmc.org/article/MED/31741109
- CAPBIL: 67.7 percent liver resection across 24 UK centres (Br J Surg 2026): https://europepmc.org/article/MED/42013358
- Khan et al.: selective versus routine histology of cholecystectomy specimens, systematic review (Asian Pac J Cancer Prev 2021): https://europepmc.org/article/MED/33773526

## Connected records

- cancers: [Gallbladder cancer](https://onco.cc/cancers/gallbladder/), [Incidental gallbladder cancer (found after cholecystectomy)](https://onco.cc/cancers/incidental-gallbladder-cancer/)
- terms: [Radical (extended) cholecystectomy](https://onco.cc/terms/radical-cholecystectomy/)
- trials: [OPT-IN (EA2197)](https://onco.cc/trials/opt-in/)
- bottlenecks: [Fragmented care and guideline gaps](https://onco.cc/bottlenecks/b-care-fragmentation/), [Knowledge reaches practice too slowly](https://onco.cc/bottlenecks/b-knowledge-diffusion/)
- key papers: [Association of Optimal Time Interval to Re-resection for Incidental Gallbladder Cancer With Overall Survival: A Multi-Institution Analysis From the US Extrahepatic Biliary Malignancy Consortium](https://onco.cc/key-papers/paper-ethun-re-resection-timing-incidental-gallbladder-cancer-jama-surg-2017/), [Incidental Carcinoma after Cholecystectomy for Benign Disease of the Gallbladder: A Meta-Analysis](https://onco.cc/key-papers/paper-pyo-incidental-gallbladder-cancer-meta-analysis-jcm-2020/), [Management of incidental gallbladder cancer in the nationwide CAPBIL study](https://onco.cc/key-papers/paper-mcclements-capbil-incidental-gallbladder-cancer-bjs-2026/), [Re-resection in Incidental Gallbladder Cancer: Survival and the Incidence of Residual Disease](https://onco.cc/key-papers/paper-de-savornin-lohman-re-resection-incidental-gallbladder-cancer-aso-2020/), [Timing of revision surgery for incidental gallbladder cancer: a systematic review and individual patient data meta-analysis](https://onco.cc/key-papers/paper-selvakumar-revision-surgery-timing-ipd-meta-analysis-hpb-2026/)
- roadmaps: [Gallbladder cancer roadmap: from a chance finding at gallstone surgery to a disease with its own trials](https://onco.cc/roadmaps/gallbladder-cancer-roadmap/)

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