Clinical features of isolated proximal-type immunoglobulin G4-related sclerosing cholangitis.
Aged
Aged, 80 and over
Autoimmune Pancreatitis
/ diagnostic imaging
Cholangiography
Cholangitis, Sclerosing
/ diagnostic imaging
Diagnosis, Differential
Endoscopic Mucosal Resection
Endosonography
Female
Humans
Immunoglobulin G
/ immunology
Klatskin Tumor
/ diagnostic imaging
Male
Middle Aged
Recurrence
Retrospective Studies
Sensitivity and Specificity
Survival Rate
Tomography, X-Ray Computed
EUS
IgG4-related sclerosing cholangitis
Klatskin tumor
autoimmune pancreatitis
Journal
Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society
ISSN: 1443-1661
Titre abrégé: Dig Endosc
Pays: Australia
ID NLM: 9101419
Informations de publication
Date de publication:
Jul 2019
Jul 2019
Historique:
received:
11
05
2018
accepted:
14
12
2018
pubmed:
21
12
2018
medline:
11
1
2020
entrez:
21
12
2018
Statut:
ppublish
Résumé
Immunoglobulin G4-related sclerosing cholangitis (IgG4-SC) presents as isolated proximal-type sclerosing cholangitis (i-SC). The present study sought to clarify the imaging differences between i-SC and Klatskin tumor. Differences between i-SC and IgG4-SC associated with autoimmune pancreatitis (AIP-SC) were also studied. Differentiating factors between i-SC and Klatskin tumor were studied. Serum IgG4 level, CA19-9 level, computed tomography (CT) findings, cholangiography findings (symmetrical smooth long stricture extending into the upper bile duct [SSLS]), endosonographic features (continuous symmetrical mucosal lesion to the hilar part [CSML]), endoscopic biopsy results, treatment, relapse, and survival were also compared between patients with i-SC and those with AIP-SC. For a differential diagnosis between i-SC (N = 9) and Klatskin tumor (N = 47), the cut-off value of serum IgG4 level was 150 mg/dL (sensitivity, 0.857, specificity, 0.966). Logistic regression analysis indicated that serum IgG4 level, presence of SSLS, presence of CSML, and presence of swollen ampulla are independent factor for identifying i-SC. Relapse rate was significantly higher in the IgG4-SC with AIP group than in the i-SC group (log rank, P = 0.046). Isolated proximal-type sclerosing cholangitis presents as a nodular lesion with SSLS and/or CSML mimicking a Klatskin tumor. Those endoscopic features might provide a diagnostic clue for i-SC. i-SC is likely to have a more favorable prognosis than IgG4-SC with AIP.
Sections du résumé
BACKGROUND AND AIM
OBJECTIVE
Immunoglobulin G4-related sclerosing cholangitis (IgG4-SC) presents as isolated proximal-type sclerosing cholangitis (i-SC). The present study sought to clarify the imaging differences between i-SC and Klatskin tumor. Differences between i-SC and IgG4-SC associated with autoimmune pancreatitis (AIP-SC) were also studied.
METHODS
METHODS
Differentiating factors between i-SC and Klatskin tumor were studied. Serum IgG4 level, CA19-9 level, computed tomography (CT) findings, cholangiography findings (symmetrical smooth long stricture extending into the upper bile duct [SSLS]), endosonographic features (continuous symmetrical mucosal lesion to the hilar part [CSML]), endoscopic biopsy results, treatment, relapse, and survival were also compared between patients with i-SC and those with AIP-SC.
RESULTS
RESULTS
For a differential diagnosis between i-SC (N = 9) and Klatskin tumor (N = 47), the cut-off value of serum IgG4 level was 150 mg/dL (sensitivity, 0.857, specificity, 0.966). Logistic regression analysis indicated that serum IgG4 level, presence of SSLS, presence of CSML, and presence of swollen ampulla are independent factor for identifying i-SC. Relapse rate was significantly higher in the IgG4-SC with AIP group than in the i-SC group (log rank, P = 0.046).
CONCLUSION
CONCLUSIONS
Isolated proximal-type sclerosing cholangitis presents as a nodular lesion with SSLS and/or CSML mimicking a Klatskin tumor. Those endoscopic features might provide a diagnostic clue for i-SC. i-SC is likely to have a more favorable prognosis than IgG4-SC with AIP.
Substances chimiques
Immunoglobulin G
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
422-430Commentaires et corrections
Type : CommentIn
Informations de copyright
© 2018 Japan Gastroenterological Endoscopy Society.