Cystic Fibrosis Foundation hepatobiliary consensus recommendations, 2024
Informed explanations of testing, monitoring, nutrition and treatment.
Start with what you were told
Families may first hear about an abnormal blood test, an ultrasound finding, an enlarged spleen, low platelets or a FibroScan result. Choose the clue that sounds most familiar.
“The liver tests are high.”
ALT, AST, GGT, bilirubin and platelets can give different clues. A temporary change during illness is different from a persistent pattern.
See how blood tests fit in →“The ultrasound looks abnormal.”
Ultrasound can show liver texture, nodularity (a bumpy or irregular appearance), fat, bile-duct or gallbladder changes, and spleen size.
See what imaging can show →“The spleen is large or platelets are falling.”
An enlarged spleen (splenomegaly) and a falling platelet count can be clues to increased pressure in the portal circulation.
Understand portal blood flow →“The liver stiffness is higher.”
Elastography or FibroScan measures liver stiffness. It adds useful information, but it does not replace the other clues.
Understand elastography →“There may be a bile-duct or gallbladder problem.”
CF can be associated with reduced bile flow (cholestasis), gallstones, strictures or other biliary changes.
See the bile-flow pathway →“ALT went up after a CFTR modulator was started or changed.”
The team may repeat blood tests and review timing, illness, other medicines and the child’s previous liver results before deciding what the change means.
See medicines & monitoring →“We were referred to hepatology.”
A liver specialist helps put the findings together, check whether another liver condition could be contributing, and decide what needs follow-up.
Prepare for the visit →One abnormal result does not define a child’s diagnosis or future course. CF liver care is usually about patterns and trends rather than one isolated number.
1Notice the clueBlood test, examination, ultrasound, elastography or symptoms.
2Look for a patternCompare results with the child’s previous baseline and current health.
3Clarify when neededAdd imaging, selected blood work or specialist review when the pattern needs explanation.
4Build the follow-up planThe schedule becomes more individualized when liver involvement is established.
What is CF-associated liver disease?
The modern picture is broader than “thick bile causes cirrhosis.” In CF, the bile ducts and the portal blood-flow system are connected, but they can be affected in different ways.
Bile pathway
Bile ducts and gallbladder
CFTR is present in bile-duct cells. Changes in bile composition and flow can contribute to biliary inflammation, narrowing, stones and patchy scarring. Bile-duct problems are only one part of the CF liver story.
Portal pathway
Portal blood flow
The portal vein brings blood from the intestines and spleen to the liver. In some children with CF, changes in small portal veins — called portal venopathy — can raise pressure in this system even without classic cirrhosis.
What does portal hypertension mean?
Portal hypertension means increased pressure in the portal blood-flow system. Clues can include an enlarged spleen, a falling platelet count, or varices — enlarged veins, often in the esophagus or stomach, that can bleed.
Why CF can look different from other liver diseases
Some people with CF develop portal hypertension without the typical pattern of cirrhosis. This is why spleen size, platelets and portal-flow clues matter even when liver stiffness or liver function appears relatively preserved.
NodularityA bumpy or irregular liver surface or texture seen on imaging.
SplenomegalyAn enlarged spleen. It can be a clue that pressure in the portal circulation is increased.
VaricesEnlarged veins, usually in the esophagus or stomach, caused by increased portal pressure.
Terms you may hear: CFHBI and aCFLD
CF hepatobiliary involvement (CFHBI) is a broad term for liver or biliary abnormalities associated with CF. Advanced CF liver disease (aCFLD) is used in CFF guidance for advanced fibrosis/cirrhosis, nodular liver or non-cirrhotic portal hypertension. These labels help organize care; they do not replace an individual child’s assessment.
Testing: build the liver picture over time
The exact testing plan depends on age, previous results, symptoms, medicines and whether liver involvement is already known. Different tests answer different questions, so the team looks at the whole pattern.
Blood tests
ALT and AST can reflect liver-cell injury; GGT and bilirubin can point toward bile-flow problems; platelets can provide an important portal-hypertension clue. Albumin and INR help assess liver function when advanced disease is a concern.
Liver & spleen examination
The clinician may check liver size, texture and firmness and look for an enlarged spleen. The examination adds information that blood tests cannot provide.
Ultrasound
Ultrasound can assess liver appearance, nodularity, fat, spleen size, gallbladder and bile ducts, and selected portal blood-flow features.
Elastography / FibroScan
Liver stiffness helps assess fibrosis risk and is useful for following trends. A reassuring stiffness result does not rule out every portal vascular problem, so platelets, spleen size and imaging still matter.
MRCP
MRCP gives a detailed view of the bile ducts. It may be used when liver tests or symptoms suggest a biliary blockage or stricture but ultrasound does not fully explain the pattern.
Other causes & selected tests
Persistent abnormalities may prompt testing for other liver conditions rather than assuming every change is caused by CF. Liver biopsy is reserved for selected situations because CF changes can be patchy and biopsy is invasive.
How a liver work-up may unfold
1 · Check the contextWas the child clinically stable? Could infection or another temporary factor explain the result?
2 · Review trendsCompare liver tests, platelets, examination and earlier results.
3 · Image when usefulUltrasound and, when appropriate, elastography add structural information.
4 · Clarify the patternLook for other liver conditions or use MRCP when a biliary cause is suspected.
5 · Plan follow-upMonitoring becomes more intensive when established or advanced disease is present.
What current CFF guidance recommends for children
- At clinical stability, liver blood tests — total bilirubin, AST, ALT, alkaline phosphatase, GGT and platelet count — are recommended annually from the time of CF diagnosis.
- An abdominal examination for liver and spleen enlargement is recommended annually from diagnosis.
- Liver and spleen ultrasound is recommended at least every 2 years from age 3 through late adolescence, or from diagnosis when CF is diagnosed after age 3.
- If liver involvement is found through examination, persistent liver-test abnormalities or ultrasound, baseline liver elastography is recommended when available.
- When CF hepatobiliary involvement is established, monitoring is more intensive. CFF guidance includes at least annual fibrosis-index review, ultrasound at least every 2 years and annual elastography when available. Advanced disease requires a more individualized specialist plan.
These are population-level recommendations. Your child’s team may adjust timing based on results, symptoms, medicines and the overall CF plan.
What can change when advanced liver disease is present?
Advanced disease may lead to more frequent liver blood tests and examination, closer nutrition and glucose monitoring, and specialist assessment for portal-hypertension complications. For children with cirrhosis or suspected cirrhosis, the CFF guideline recommends annual liver ultrasound and alpha-fetoprotein (AFP) surveillance for hepatocellular carcinoma.
Want a deeper explanation of a test?
Open Understanding Liver Tests & Procedures →The LiverSteps testing guide explains blood tests, ultrasound, FibroScan, MRI/MRCP, biopsy and endoscopy in plain language.
Management: match care to the problem that is present
There is no single treatment for every CF-related liver finding. The plan depends on whether the main issue is biliary disease, portal hypertension, medication monitoring, nutrition or advanced liver disease.
Biliary disease
Gallbladder or bile-duct problems
Symptoms and imaging guide care. Symptomatic gallbladder disease may need surgery, and bile-duct obstruction may need a procedure such as ERCP.
Portal hypertension
Watch pressure-related complications
An enlarged spleen, falling platelets, varices or bleeding can change follow-up. In children, decisions about screening endoscopy and prevention are individualized because evidence is limited.
UDCA
Not routine prevention for everyone
Current CFF guidance recommends against routine ursodeoxycholic acid (UDCA) simply to prevent advanced CF liver disease. If a child already takes UDCA, the reason for treatment and ongoing plan should be individualized.
CFTR modulators
Liver outcomes are still being studied
CFTR modulators are important CF therapies for eligible children. If liver tests change after a modulator is started or changed, the CF team may repeat tests and review other possible causes before deciding whether the treatment plan needs adjustment.
Medication safety
Review the whole medicine list
CF care often involves several medicines. Liver involvement may change how closely medicines and drug interactions are monitored.
Bleeding-risk note: if your child has low platelets, known varices or a bleeding history, ask the CF/liver team before using NSAIDs such as ibuprofen or naproxen. Some children with CF use ibuprofen for other reasons, so existing treatment should be reviewed with the prescribing team rather than changed independently.
Protecting liver health
Vaccines and preventable risks
Ask whether routine immunizations are up to date, including hepatitis A and hepatitis B vaccination as advised by the child’s care team. Bring supplements and over-the-counter products to medication reviews too.
Advanced disease
Specialist planning when needed
Selected children with significant portal-hypertension complications or liver dysfunction may need discussion of shunt procedures or transplantation. Referral is about planning at the right time; it does not mean transplantation is inevitable.
A useful family question: “What liver problem are we treating or monitoring right now, and what change would make you adjust the plan?”
Nutrition & growth
Liver involvement can add extra nutrition questions to an existing CF care plan. The goal is to protect growth, strength, vitamin status and bone health while responding to the child’s actual liver findings.
There is no single “CF liver diet”
The dietitian looks at growth, appetite, fat absorption, pancreatic function, vitamins, liver status and the child’s usual CF nutrition plan together. Advanced liver disease can increase nutritional burden, so review may become more frequent and more detailed.
Bring the trend. Weight and height over time, appetite changes, stool symptoms, vitamin levels and glucose results are more useful than one isolated number.
Growth & energyWeight, height, muscle and energy needs.
Fat digestionBile flow can add to fat-absorption challenges.
Vitamins A, D, E & KLevels and doses may need closer review.
Bone healthVitamin D, nutrition and metabolic bone risk matter.
Growth, energy and muscle
Advanced liver disease can make maintaining nutrition harder. The team follows growth and may adjust energy and protein support when needed.
Fat absorption & bile
Bile helps digest fat. Reduced bile flow can add another layer to fat malabsorption, so symptoms and growth are interpreted alongside the child’s pancreatic enzyme and CF nutrition plan.
Fat-soluble vitamins
Vitamins A, D, E and K can be affected by CF and hepatobiliary disease. The team may monitor levels and adjust supplementation based on results.
Bone health & essential fats
Advanced liver disease can add to risks for metabolic bone disease and essential fatty-acid deficiency. These are reviewed with the child’s broader CF nutrition status.
Glucose & CF-related diabetes
Advanced CF liver disease is associated with more glucose abnormalities. CFF guidance recommends starting CF-related diabetes screening when advanced liver disease is diagnosed, even if that is earlier than the usual age-based schedule.
Questions for the dietitian
“Is growth on track? Does liver involvement change the vitamin plan? Are there signs of fat malabsorption, bone risk or another deficiency we should check?”
When to seek help
Most routine liver findings are managed through planned follow-up. A few symptoms need faster assessment because they can signal bleeding, biliary infection or worsening liver function.
Call 9-1-1 or go to the emergency department now
- Vomiting blood.
- Black, tarry stool together with faintness, severe weakness or looking very unwell.
- Collapse, new confusion or difficulty waking.
- Severe breathing difficulty or another life-threatening change.
Contact the CF/liver team the same day or seek urgent assessment
- New or rapidly worsening yellow eyes/skin.
- Rapidly increasing abdominal swelling.
- Severe or persistent abdominal pain, especially with fever.
- New significant bruising or bleeding.
- A major change in eating, energy or overall condition that is not settling.
Visit prep & family support
You do not need to learn every liver term at once. A short list of questions, one clear contact plan and language your child understands are often more useful than trying to remember everything.
Explain it simply
You might say: “The team is checking the liver’s bile tubes and blood flow. Different tests look at different parts, so they compare the results over time.”
School, sports & everyday life
Most liver findings do not automatically restrict school or activity. If the spleen is enlarged or there is a specific bleeding risk, ask whether contact sports or other activities need modification.
Make appointments easier
Keep one short liver summary with the main finding, last important test, next planned test and the name of the team reviewing it. This can reduce repeated explanations.
Know who to call
Before leaving clinic, know who handles routine liver questions, who gives test results, and where to call after hours if a concerning symptom develops.
Use the testing guide when a new term comes up
Blood tests, ultrasound, FibroScan, MRCP, biopsy and endoscopy are explained separately in the LiverSteps Tests & Procedures guide.
Family support beyond clinic
Cystic Fibrosis Canada offers CF information, advocacy and family support resources for people living with CF across Canada.
Choose questions for the next visit
My CF liver visit list
Select the questions you want to bring.
Useful to bring: the current medicine and supplement list, recent liver results if you have them, questions about ultrasound/FibroScan wording, and any changes in growth, appetite, jaundice, abdominal fullness, bruising or bleeding.
Evidence & About this module
ESPGHAN/NASPGHAN joint position paper on CF hepatobiliary involvement, 2024
Informed the explanation of the different patterns of CF liver and biliary involvement.
McCormick & Fitzpatrick — editorial commentary, 2024
Informed the explanation of portal blood-flow problems without cirrhosis.
Peer-reviewed pediatric CF hepatobiliary literature
Informed explanations of liver stiffness, imaging and follow-up over time.
What it is
- A guide to CF-related liver, bile-duct and blood-flow findings
- Help understanding testing and monitoring over time
- Support for nutrition, visit preparation and warning signs
What it is not
- Not a diagnostic or prescribing tool
- Not an individualized test-interpretation service
- Not a replacement for medical care or your child’s care plan