Liver Changes in Cystic Fibrosis: What a New Study Found

Cystic fibrosis affects the lungs and pancreas—but it can also damage the liver. When this happens, doctors call it cystic fibrosis-associated liver disease, or CFALD. The problem is that CFALD is tricky to spot. Many children don't feel sick, there's no standard way to diagnose it, and simple blood or imaging tests don't always catch it early.

A new study from 2025 looked at how often liver problems actually occur in children with CF and what those problems look like.

Researchers reviewed records from 60 children with cystic fibrosis, ranging in age from less than 1 year to 18 years old. About half were boys. All of these children had at least one liver test or an ultrasound scan, regardless of whether they had symptoms.

The study excluded children who had other liver or kidney diseases, cerebral palsy, or type 1 diabetes, so the findings focus specifically on liver changes linked to CF itself.

About 1 in 6 children (16.6%) showed abnormal results on liver function blood tests. When doctors looked at ultrasound images, liver changes appeared in about 28% of the children who were scanned—that's 13 out of 47 kids. These changes included an enlarged liver, an uneven grainy appearance, or fatty buildup in the liver tissue.

The important finding: most of these children had no symptoms and wouldn't have been identified as having liver problems without testing.

This study adds to what we know about how common liver involvement is in cystic fibrosis. Because many children show no warning signs, regular screening with blood tests and imaging may be important for catching problems early.

The study also highlights a real challenge in CF care: there's no agreed-upon definition of CFALD, which makes it harder for doctors to know when to start treatment and easier for milder cases to slip through the cracks. More research is needed to develop clearer diagnostic tools and to understand which liver changes matter most for a child's long-term health.

Source: BMC gastroenterology. Evidence type: PubMed indexed literature. Type1Cure is an information and intelligence hub, not a medical advice service. This article summarizes published research and does not provide diagnosis, treatment, or personal medical guidance. Always talk to your own care team before changing anything about your Type 1 diabetes management.