Biliary Obstruction

Suspect acute cholangitis when systemic inflammation accompanies cholestasis and imaging evidence of obstruction, particularly in a patient with fever, jaundice, right-upper-quadrant pain, prior biliary instrumentation, known stones, or a biliary stricture. Charcot triad is present in only an estimated 50% to 70% of cases and should not be required before escalation. BMJ+1BMJAcute cholangitis - Symptoms, diagnosis and treatment | BMJ Best PracticeBMJAcute cholangitis - Symptoms, diagnosis and treatment | BMJ Best Practice US

Escalate immediately to resuscitation, parenteral broad-spectrum antimicrobial therapy, blood cultures when feasible without delaying treatment, and urgent GI/interventional radiology consultation if hypotension, mental-status change, organ failure, or progressive clinical deterioration is present. Antibiotics address bacteremia but do not relieve the obstructed infected duct; biliary drainage is the critical source-control step. BMJ+2BMJAcute cholangitis - Symptoms, diagnosis and treatment | BMJ Best PracticeNatureDiagnosis and management of acute cholangitis | Nature Reviews Gastroenterology & HepatologyScienceDirectProspective Assessment of Clinical Criteria for Diagnosis and Severity of Acute Cholangitis

For cholangitis due to choledocholithiasis, favor endoscopic biliary drainage with ERCP when feasible. Delaying ERCP beyond 72 hours after presentation has been associated with greater vasopressor requirement, and each day of delay was associated with 1.44 additional hospital days in a prospective study. BMJBMJUpdated guideline on the management of common bile ...

Order transabdominal ultrasonography as the first study for suspected biliary obstruction. It is the usual initial modality for suspected biliary disease and can identify ductal dilation, gallstones, and some obstructing masses; a nondiagnostic study should not end the evaluation when clinical or laboratory evidence of obstruction persists. BMJ+2BMJImaging in biliary obstruction CommentaryBMJImaging in biliary obstructionOxford AcademicBiliary strictures: diagnostic considerations and approach

In a stable patient with suspected choledocholithiasis after initial imaging, use MRCP or EUS to avoid diagnostic ERCP. EUS has reported pooled sensitivity of 94% and specificity of 95% for common-bile-duct stones, and its sensitivity is less affected by stones smaller than 5 mm than CT or MRCP. Wolters KluwerWolters KluwerThe efficacy of endoscopic ultrasound for the... : Journal of the Chinese Medical Association

Use MRCP when a noninvasive map of the biliary tree is needed, especially for suspected stricture or PSC. In suspected PSC, MRI/MRCP has diagnostic accuracy comparable to ERCP, whereas ERCP carries serious complications and should be limited to therapeutic intervention or tissue sampling. If MRCP is equivocal or technically suboptimal in a patient with high pretest probability of PSC, repeat it at an experienced center using 3-dimensional reconstruction. Wolters KluwerWolters KluwerAASLD practice guidance on primary sclerosing... : Hepatology

Choledocholithiasis is the most common cause of acute cholangitis. When it causes cholangitis, ERCP provides both source control and treatment through biliary drainage, sphincterotomy, and stone extraction as clinically appropriate. Nature+1NatureDiagnosis and management of acute cholangitis | Nature Reviews Gastroenterology & HepatologyScienceDirectProspective Assessment of Clinical Criteria for Diagnosis and Severity of Acute Cholangitis

Do not perform ERCP merely to exclude stones in a stable patient. EUS can select patients for therapeutic ERCP and is particularly useful for small stones; reported sensitivity for stones smaller than 4 mm was higher for EUS than ERCP in the cited comparison. Wolters KluwerWolters KluwerThe efficacy of endoscopic ultrasound for the... : Journal of the Chinese Medical Association

If acute gallstone pancreatitis is accompanied by cholangitis or persistent biliary obstruction, biliary sphincterotomy and endoscopic stone extraction should occur within 72 hours. Once it is safe to operate after gallstone pancreatitis, offer early laparoscopic cholecystectomy to reduce recurrent episodes. BMJBMJUpdated guideline on the management of common bile ...

For suspected perihilar or distal cholangiocarcinoma, obtain multiphasic contrast CT and/or MRI/MRCP to characterize the obstruction and assess neoplastic invasion. Obtain CA 19-9, but interpret it cautiously in the presence of biliary obstruction; obtain serum IgG4 when IgG4-related sclerosing cholangitis is a competing diagnosis. Wolters KluwerWolters KluwerAASLD practice guidance on primary sclerosing... : Hepatology

Use ERCP selectively to delineate anatomy when needed and to obtain brush cytology and fluorescence in situ hybridization in suspected perihilar or distal cholangiocarcinoma. A negative cytology result does not reliably exclude cancer: in PSC-associated cholangiocarcinoma assessment, biliary brushings had reported sensitivity of 43% and specificity of 97%. BMJ+1BMJBritish Society of Gastroenterology and UK-PSC guidelines for ... - GutWolters KluwerAASLD practice guidance on primary sclerosing... : Hepatology

Review imaging, laboratory data, clinical history, and pathology in a hepatobiliary multidisciplinary setting. When potentially curative surgery is under consideration, histologic or cytologic confirmation is not absolute; after discussion with the patient, surgery may be appropriate despite nondiagnostic sampling if malignancy remains sufficiently likely and surgery can provide cure and diagnosis. BMJ+1BMJBritish Society of Gastroenterology guidelines for the diagnosis ... - GutBMJBritish Society of Gastroenterology guidelines for the diagnosis and management of cholangiocarcinoma | Gut

After biliary decompression for cholangitis, reassess hemodynamics, mental status, organ dysfunction, fever trajectory, and cholestatic laboratory abnormalities. Failure to improve should prompt verification of drainage adequacy and reassessment for residual obstruction, complex hilar disease, or an alternative source of sepsis. Obstruction in multiple biliary branches is particularly relevant in hilar disease, where incomplete drainage increases procedural complexity and post-ERCP cholangitis risk. BMJ+1BMJAcute cholangitis - Symptoms, diagnosis and treatment | BMJ Best PracticeNatureRisk prediction of cholangitis after stent implantation based on machine learning | Scientific Reports

For stone disease, complete the recurrence-prevention plan after duct clearance; after gallstone pancreatitis, early laparoscopic cholecystectomy is the recommended preventive intervention when the patient can safely undergo surgery. BMJBMJUpdated guideline on the management of common bile ...

For malignant or indeterminate obstruction, ensure prompt hepatobiliary multidisciplinary review after imaging and tissue acquisition. The decision between interval imaging and surgery when pathology is nondiagnostic should incorporate resectability, probability of malignancy, and the patient's priorities rather than relying on cytology alone. BMJBMJBritish Society of Gastroenterology guidelines for the diagnosis and management of cholangiocarcinoma | Gut