Primary Sclerosing Cholangitis Clinical Presentation
- Author: Vikas Khurana, MD, FACP, FACG; Chief Editor: Julian Katz, MD more...
History
Approximately 75-90% of patients with primary sclerosing cholangitis (PSC) have inflammatory bowel disease (IBD). Of these, 87% have ulcerative colitis and 13% have Crohn colitis; however, the course of IBD is not related to PSC. Most patients are male and are diagnosed at a mean age of approximately 40 years.[8]
Symptoms upon initial presentation consist of fatigue, jaundice, pruritus, and right upper quadrant pain. The clinical course varies a great deal. Symptoms may remit and then recur spontaneously. Occasionally, patients with PSC have an acute hepatitis-like presentation. Recurrent febrile episodes of bacterial cholangitis occur in 10-15% of patients during the course of PSC. Pancreatic duct involvement in PSC is uncommon, and pancreatic exocrine insufficiency is not correlated when ductal abnormalities are noted.
Patients with asymptomatic PSC constitute 20-40% of the cohort in some large studies. This high percentage is thought to be attributable to the practices of screening patients with ulcerative colitis for elevated alkaline phosphatase levels and performing endoscopic retrograde cholangiopancreatography (ERCP). Cirrhosis, portal hypertension, and liver failure occur in progressive disease, with symptoms consistent with these entities, including variceal bleeding, ascites, and hepatic encephalopathy. The risk for cholangiocarcinoma is increased significantly in patients with PSC.[9, 10]
Physical Examination
Physical examination results are significant for jaundice, weight loss, and, occasionally, pruritic skin marks. Hepatomegaly is common, and splenomegaly is present in up to one third of patients with PSC. As the disease progresses, signs of liver failure, including spider angiomata, ascites, and muscle atrophy, become apparent.
Staging
Ludwig and associates described 4 stages of PSC,[11] as follows:
- Stage 1: portal hepatitis, degeneration of bile ducts with inflammatory cell infiltrate
- Stage 2: extension of disease to periportal area with prominent bile ductopenia
- Stage 3: septal fibrosis and necrosis
- Stage 4: frank cirrhosis
Complications
Cholangitis and cholelithiasis occur more frequently in patients with primary sclerosing cholangitis (PSC). Chronic cholestasis leads to steatorrhea, fat-soluble vitamin deficiency (vitamins A, D, E, and K), metabolic bone disease with osteoporosis, and calorie loss with resultant weight loss. Secondary biliary cirrhosis due to chronic cholestasis occurs in patients with PSC. Portal hypertension with variceal bleeding, ascites, and liver failure then ensue.
Cholangiocarcinoma reportedly occurs in association with PSC in 6-30% of patients; on autopsy, it is found in up to 30-40% of patients with PSC. The development of cholangiocarcinoma remains unpredictable in any given patient, and no reliable serologic tumor markers have been identified. Worsening jaundice, pruritus, or weight loss may indicate development of a stricture or cholangiocarcinoma
Dominant biliary strictures can be identified in about 20% of patients with PSC and must be differentiated from cholangiocarcinoma. Strictures cause cholestasis with jaundice and pruritus and may also result in cholangitis.
The risk of colon cancer is increased for patients with both ulcerative colitis and PSC versus those with only ulcerative colitis. [#FollowupPatientEducation] [#MiscellaneousMedicalLegalPitfalls]
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