title: Type 2 autoimmune hepatitis overlapping with primary sclerosing cholangitis in a 10-year-old boy.
abstract: BACKGROUND
  Overlap syndrome of autoimmune hepatitis (AIH) and primary sclerosing cholangitis (PSC) is considered when the patient presents with the diagnostic criteria of both diseases at some stage of the medical history, either simultaneously or consecutively.
  
  
  OBJECTIVE
  To report on a new case of overlap syndrome and describe the clinical presentation, progression, radiological studies, histological characteristics, and therapeutic options of this rare association.
  
  
  METHODS
  A 10-year-old boy presented with jaundice and hepatosplenomegaly. Levels of plasma aminotransferases, gamma-glutamyl transferase, serum alkaline phosphatase and gammaglobulins were elevated. Anti-liver cytosol and perinuclear antineutrophilic cytoplasmic antibodies were positive. Liver biopsy showed features of interface hepatitis with ductopenia. Magnetic resonance cholangiography revealed bile duct stenosis and dilations. Serological findings associated with radiological and histological features confirmed the diagnosis of overlap syndrome of AIH with PSC. Treatment with prednisone, azathioprine, and ursodeoxycholic acid led to a good response.
  
  
  CONCLUSIONS
  The possibility of AIH-PSC overlap syndrome should be considered in all children with AIH and, with clinical, biochemical, or histological signs of PSC, complementary investigations should be done to confirm the diagnosis so as to urgently initiate appropriate treatment with immunosuppressive medication and ursodeoxycholic acid.
authors.affiliation: Department of pediatrics, pediatric emergency and intensive care, Hedi Chaker Hospital, University of medicine, route El Aïn, Km 0,5, 3029 Sfax, Tunisia. Electronic address: abdelhedigargourilamia@yahoo.fr.
authors.forename: L
authors.initials: L
authors.lastname: Gargouri
authors.forename: L
authors.initials: L
authors.lastname: Mnif
authors.forename: F
authors.initials: F
authors.lastname: Safi
authors.forename: F
authors.initials: F
authors.lastname: Turki
authors.forename: I
authors.initials: I
authors.lastname: Majdoub
authors.forename: B
authors.initials: B
authors.lastname: Maalej
authors.forename: I
authors.initials: I
authors.lastname: Bahri
authors.forename: H
authors.initials: H
authors.lastname: Mnif
authors.forename: T
authors.initials: T
authors.lastname: Boudawara
authors.forename: N
authors.initials: N
authors.lastname: Tahri
authors.forename: A
authors.initials: A
authors.lastname: Mahfoudh
mesh_terms: D000469:Alkaline Phosphatase / Q000097:blood; D001379:Azathioprine / Q000627:therapeutic use; D015415:Biomarkers / Q000097:blood; D002648:Child; D002756:Cholagogues and Choleretics / Q000627:therapeutic use; D015209:Cholangitis, Sclerosing / Q000097:blood / Q000175:diagnosis* / Q000188:drug therapy; D004359:Drug Therapy, Combination; D005938:Glucocorticoids / Q000627:therapeutic use; D019693:Hepatitis, Autoimmune / Q000097:blood / Q000145:classification / Q000175:diagnosis* / Q000188:drug therapy; D006529:Hepatomegaly / Q000209:etiology; D006801:Humans; D007166:Immunosuppressive Agents / Q000627:therapeutic use; D007565:Jaundice / Q000209:etiology; D008279:Magnetic Resonance Imaging; D008297:Male; D011241:Prednisone / Q000627:therapeutic use; D013163:Splenomegaly / Q000209:etiology; D000637:Transaminases / Q000097:blood; D016896:Treatment Outcome; D014580:Ursodeoxycholic Acid / Q000627:therapeutic use; D005719:gamma-Globulins / Q000378:metabolism; D005723:gamma-Glutamyltransferase / Q000097:blood
chemical_list: D015415:Biomarkers; D002756:Cholagogues and Choleretics; D005938:Glucocorticoids; D007166:Immunosuppressive Agents; D005719:gamma-Globulins; D014580:Ursodeoxycholic Acid; D005723:gamma-Glutamyltransferase; D000637:Transaminases; D000469:Alkaline Phosphatase; D001379:Azathioprine; D011241:Prednisone