Do patients with nephrotic syndrome have an increased risk of gallstone formation and biliary colic?

Gallstones and Biliary Colic in Nephrotic Syndrome

Yes, patients with nephrotic syndrome do have an increased risk of gallstone formation and biliary complications, though the evidence base is limited and emerging. The most recent high-quality research demonstrates that proteinuria is independently associated with impaired gallbladder emptying, which mechanistically predisposes to gallstone formation 1.

Evidence for Increased Gallstone Risk

The strongest and most recent evidence comes from a 2026 prospective ultrasonographic study that directly examined gallbladder function in proteinuric glomerular disease 1. This study found:

• Gallbladder ejection fraction was significantly reduced in proteinuric patients (41.76% vs 53.10% in controls, p=0.0042)
• Impaired gallbladder emptying (GBEF <40%) was nearly twice as common in proteinuric patients (48.1% vs 27.8%, p=0.031)
• After adjusting for age, sex, and BMI, proteinuria was associated with a 2.95-fold increased odds of impaired gallbladder emptying (95% CI 1.17-7.47, p=0.022)
• This association persisted regardless of whether proteinuria was in the nephrotic range, serum albumin level, or specific glomerular disease subtype

A 2026 review further confirms that chronic kidney disease, particularly advanced CKD and dialysis patients, have increased burden of gallstones and acute cholecystitis 2. While this study focused on CKD broadly rather than nephrotic syndrome specifically, it identifies plausible mechanisms including uremia-associated autonomic dysfunction affecting gallbladder motility and shared metabolic risk factors.

Pathophysiologic Mechanisms

The mechanism appears to be gallbladder dysmotility rather than direct stone formation from proteinuria itself 1. In proteinuric glomerular diseases, renal loss of peptide hormones (potentially including cholecystokinin or related regulatory proteins) may impair the normal postprandial gallbladder contraction response. Impaired gallbladder emptying leads to bile stasis, which is a well-established risk factor for cholesterol and pigment gallstone formation.

Clinical Implications and Management

Screening Considerations

While no formal guidelines exist specifically for nephrotic syndrome patients, the evidence suggests:

• Consider screening with right upper quadrant ultrasound in nephrotic syndrome patients who develop abdominal symptoms, particularly right upper quadrant pain
• Maintain high clinical suspicion as abdominal complaints in nephrotic syndrome may be nonspecific and overlap with other uremia-related symptoms 2
• Early hepatobiliary enzyme abnormalities may be absent in uncomplicated acute cholecystitis; marked bilirubin elevation or cholestatic pattern should prompt evaluation for choledocholithiasis 2

Treatment Approach

When gallstones are identified:

• Symptomatic gallstones warrant cholecystectomy per standard guidelines 3, 4
• For patients with biliary colic, laparoscopic cholecystectomy during index admission is recommended if the patient is a suitable surgical candidate 5
• Do not defer source control solely because of nephrotic syndrome or CKD; advanced kidney disease should not be considered an automatic contraindication to necessary biliary intervention 2

Important Caveats

Asymptomatic gallstones in nephrotic syndrome: The 1993 American College of Physicians guidelines recommend expectant management for asymptomatic gallstones in the general population 3. However, this recommendation predates the recent evidence of gallbladder dysmotility in proteinuric disease. Given the 2.95-fold increased risk of impaired emptying and the potential for progression, closer surveillance may be warranted in nephrotic syndrome patients with incidentally discovered gallstones, though formal evidence is lacking.

Diagnostic pitfalls: Be aware that certain medications used in nephrotic syndrome management may complicate the picture. Ceftriaxone can cause pseudolithiasis, and if GLP-1 receptor agonists are used for associated metabolic conditions, they may also affect biliary motility 2.

Thrombotic complications: Remember that nephrotic syndrome itself carries significant thrombotic risk 6, 7, 8. When planning surgical intervention, appropriate thromboprophylaxis is essential, particularly given that serum albumin <20-25 g/L is an indication for prophylactic anticoagulation consideration 7.

Summary of Recommendations

For nephrotic syndrome patients presenting with right upper quadrant pain:

1. Obtain right upper quadrant ultrasound to evaluate for cholecystitis 9
2. Check liver biochemical tests (ALT, AST, bilirubin, ALP, GGT) 9
3. If gallstones with biliary colic are confirmed, proceed with laparoscopic cholecystectomy unless prohibitive surgical risk 3, 4
4. Ensure appropriate perioperative thromboprophylaxis given underlying nephrotic syndrome 7

For asymptomatic gallstones discovered incidentally:

• Current general population guidelines favor expectant management 3
• However, given emerging evidence of gallbladder dysmotility in proteinuric disease, consider more frequent surveillance
• Shared decision-making regarding prophylactic cholecystectomy may be appropriate in younger patients with severe proteinuria and impaired gallbladder function

The evidence linking nephrotic syndrome to gallstone disease is emerging and mechanistically sound, though prospective longitudinal studies are needed to establish formal screening protocols and determine optimal timing for intervention in asymptomatic cases 1.