Primary sclerosing cholangitis differential diagnosis

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Dima Nimri, M.D. [2] Akshun Kalia M.B.B.S.[3]

Overview

Primary sclerosing cholangitis must be differentiated from causes of secondary sclerosing cholangitis.

Differentiating Primary sclerosing cholangitis from other Diseases

Primary sclerosing cholangitis must be differentiated from causes of secondary sclerosing cholangitis. These include:

Primary sclerosing cholangitis must be differentiated from other causes of jaundice and pruritis:

Classification of jaundice based on etiology Disease History and clinical manifestations Diagnosis Lab Findings Other blood tests Other diagnostic Family history Fever RUQ Pain Pruritis AST ALT ALK BLR Indirect BLR Direct Viral serology Cholestatic Jaundice Primary sclerosing cholangitis -/+ + + + N/↑ N/↑ ↑ N ↑ - Beading on MRCP Liver biopsy Common bile duct stone -/+ -/+ + + N N ↑ N ↑ - Dilated ducts on sono CT/ERCP Hepatitis A cholestatic type - -/+ + + N N ↑ N ↑ + HAV- AB Abdominal ultrasound EBV / CMV hepatitis - -/+ + + N N ↑ N ↑ + Positive serology Primary biliary cirrhosis -/+ - -/+ + N/↑ N/↑ ↑ N ↑ - AMA positive Liver biopsy Pancreatic carcinoma + - -/+ - N/↑ N/↑ ↑ N ↑ - Mass on ultrasond CT scan for diagnosis

Abbreviations: RUQ= Right upper quadrant of the abdomen, LUQ= Left upper quadrant, LLQ= Left lower quadrant, RLQ= Right lower quadrant, LFT= Liver function test, SIRS= Systemic inflammatory response syndrome, ERCP= Endoscopic retrograde cholangiopancreatography, IV= Intravenous, N= Normal, AMA= Anti mitochondrial antibodies, LDH= Lactate dehydrogenase, GI= Gastrointestinal, CXR= Chest X ray, IgA= Immunoglobulin A, IgG= Immunoglobulin G, IgM= Immunoglobulin M, CT= Computed tomography, PMN= Polymorphonuclear cells, ESR= Erythrocyte sedimentation rate, CRP= C-reactive protein, TS= Transferrin saturation, SF= Serum Ferritin, SMA= Superior mesenteric artery, SMV= Superior mesenteric vein, ECG= Electrocardiogram

Primary sclerosing cholangitis must be differentiated from other abdominal pain causes:

Disease Clinical manifestations Diagnosis Comments Symptoms Signs Abdominal Pain Fever Rigors and chills Nausea or vomiting Jaundice Diarrhea Weight loss Hypo- tension Guarding Rebound Tenderness Lab Findings Imaging Primary sclerosing cholangitis RUQ + − − + − − − − − Increased liver enzymes Increased IgM, IgG4 Anti-neutrophil cytoplasmic antibody (p-ANCA) Anti-nuclear antibody (ANA) Anti-smooth muscle antibody (Anti-Sm) Anti-endothelial antibody Anti-cardiolipin antibody ERCP and MRCP shows Multiple segmental strictures Mural irregularities Biliary dilatation and diverticula Distortion of biliary tree The risk of cholangiocarcinoma in patients with primary sclerosing cholangitis is 400 times higher than the risk in the general population. Acute suppurative cholangitis RUQ + + + + − − + + + Abnormal LFT WBC >10,000 Ultrasound shows biliary dilatation/stents/tumor Septic shock occurs with features of SIRS Acute cholangitis RUQ + − − + − − − − − Abnormal LFT Ultrasound shows biliary dilatation/stents/tumor Biliary drainage (ERCP) + IV antibiotics Acute cholecystitis RUQ + − + + − − − − − Hyperbilirubinemia Leukocytosis Ultrasound shows: Gallstone Inflammation Murphy’s sign Disease Abdominal Pain Fever Rigors and chills Nausea or vomiting Jaundice Diarrhea Weight loss Hypo- tension Guarding Rebound Tenderness Lab Findings Imaging Comments Acute pancreatitis Epigastric + − + ± − − ± − − Increased amylase / lipase Ultrasound shows evidence of inflammation CT scan shows severity of pancreatitis Pain radiation to back Chronic pancreatitis Epigastric − − ± ± + + − − − Increased amylase / lipase Increased stool fat content Pancreatic function test CT scan Calcification Pseudocyst Dilation of main pancreatic duct Predisposes to pancreatic cancer Pancreatic carcinoma Epigastric − − + + + + − − − ↑ Alkaline phosphatase ↑ serum bilirubin ↑ gamma-glutamyl transpeptidase ↑ CA 19-9  MDCT with  PET/CT MRI Skin manifestations may include: Bullous pemphigoid Cicatricial pemphigoid Migratory superficial thrombophlebitis (classic Trousseau's syndrome) Primary biliary cirrhosis RUQ/Epigastric − − − + − − − − − Increased AMA level, abnormal LFTs ERCP Pruritis Cholelithiasis RUQ/Epigastric ± − ± ± − − − − − Leukocytosis Ultrasound shows gallstone Fatty food intolerance Biliary colic RUQ − − + + − − − − − ↑ bilirubin and alkaline phosphatase Ultrasound Disease Abdominal Pain Fever Rigors and chills Nausea or vomiting Jaundice Diarrhea Weight loss Hypo- tension Guarding Rebound Tenderness Lab Findings Imaging Comments Inflammatory bowel disease Diffuse ± − − ± + + − − − Anti-neutrophil cytoplasmic antibody (P-ANCA) in Ulcerative colitis Anti saccharomyces cerevisiae antibodies (ASCA) in Crohn's disease String sign on abdominal x-ray in Crohn's disease Extra intestinal findings: Uveitis Arthritis Whipple's disease Diffuse ± − − ± + + ± − − Thrombocytopenia Hypoalbuminemia Small intestinal biopsy for Tropheryma whipplei Endoscopy is used to confirm diagnosis. Images used to find complications Chest and joint x-ray CT MRI Echocardiography Extra intestinal findings: Uveitis Endocarditis Encephalitis Dementia Hepatosplenomegaly Arthritis Ascites Viral hepatitis RUQ + − + + Positive in Hep A and E + Positive in fulminant hepatitis Positive in acute + Abnormal LFTs Viral serology US Hep A and E have fecal-oral route of transmission Hep B and C transmits via blood transfusion and sexual contact. Disease Abdominal Pain Fever Rigors and chills Nausea or vomiting Jaundice Diarrhea Weight loss Hypo- tension Guarding Rebound Tenderness Lab Findings Imaging Comments Liver abscess RUQ + + + + ± + + + ± CBC Blood cultures Abnormal liver function tests US CT Hepatocellular carcinoma/Metastasis RUQ + − − + − + − − − High levels of AFP in serum Abnormal liver function tests US CT Liver biopsy Other symptoms: Splenomegaly Variceal bleeding Ascites Spider nevi Asterixis Cirrhosis RUQ − − − + − + + − − Hypoalbuminemia Prolonged PT Abnormal LFTs Hyponatremia Thrombocytopenia US Nodular, shrunken liver Ascites Stigmata of liver disease Cruveilhier- Baumgarten murmur Spontaneous bacterial peritonitis Diffuse + − − Positive in cirrhotic patients + − ± + + Ascitic fluid PMN>250 cells/mm³ Culture: Positive for single organism Ultrasound for evaluation of liver cirrhosis