endoscopic diagnostic and therapeutic interventions in ...endoscopic ultrasound (eus) guided liver...
TRANSCRIPT
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Todd H. Baron MD, FASGE
Endoscopic Diagnostic and Therapeutic Interventions in Liver Disease
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2008 2013 2018
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Overview•Diagnostic
• ERCP for PSC• EUS-guided liver biopsy
•Therapeutic•Gallbladder drainage• EUS-guided gastric variceal embolization• ERCP for PSC, post-transplant
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PSC: Role of Endoscopy
• Diagnosis of PSC• Detection of cholangiocarcinoma• Treatment of PSC related complications
• stones • dominant strictures• palliation of biliary obstruction• pre-transplant therapy
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Diagnosis of PSC
• Cholangiography remains the gold standard• Characteristic cholangiographic findings• ERCP is invasive, but recommended when MRCP non-
diagnostic or equivocal when clinical suspicion is high
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Endoscopic finding: Retraction of The Papilla
• Small series – seen in 70% of patients• Not seen with isolated intrahepatic PSC
Parlak E. Gastrointest Endosc. 2007 Mar;65(3):532-6.
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Endoscopic Treatment of PSC Strictures
• Generally undertaken with worsening liver function testsAND
• Symptoms of cholangitis, pruritus• Dominant strictures
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Dominant stricture
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Goals of Treatment
• Improve symptoms• Improve liver function tests• Delay transplantation
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AdenoCA
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Detection of Cholangiocarcinoma
• Cholangiographic findings not predictive• Brush cytology –
• Performed in dominant strictures • Sensitivity 43%; specificity 97%• Fluorescent in-situ hybridization (FISH) increases accuracy
• Intraductal biopsies complementary
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Fluorescent in-situ hybridization (FISH)
•Used to detect and localize the presence or absence of specific DNA sequences on chromosomes
•Abnormal FISH results•Polysomy•Chromosomal deletions
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Single operator cholangioscopy
• Allows targeted biopsies of dominant strictures – may increase sensitivity
• Can facilitate passage of guidewires across strictures
Arnelo U. Endoscopy. 2015 Aug;47(8):696-702Siiki A. Scand J Gastroenterol. 2014 Nov;49(11):1385-90.Kalaitzakis E. Scand J Gastroenterol. 2014 Oct;49(10):1237-44
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Endoscopic Ultrasound-Guided Liver Biopsy for Parenchymal Liver Disease
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Endoscopic Ultrasound (EUS) Guided Liver Biopsy
• Originally used for focal pancreatic and hepatic lesions
• Real-time Doppler available• Bi-lobar approaches
• Left lobe: Transgastric• Right lobe: Transduodenal
• Similar diagnostic and tissue yield as compared to traditional techniques
Gastrointest Endosc. 2016 Feb;83(2)
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Methods
• All samples sent to surgical pathology for diagnosis• Independent, experienced liver pathologist reviewed all biopsies
• Total Specimen Length (TSL)• Complete Portal Triads (CPT)
• Adequacy defined by AASLD guidelines• CPT ≥ 11• TSL ≥ 30 mm
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Results
# of Passes TSL (mm) CPTAverage 1.8 65.3 34.5Median 2.0 65.6 31.5
• Total of 24 patients included• Adequacy of samples
– Based on CPT: 23/24 = 95.8%– Based on TSL: 21/24: 87.5%
• 1 Adverse Event: subcapsular hemorrhage
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Results – Histologic Diagnosis
NASH, 42%
PSC, 21%
AIH, 4%
Cirrhosis, 13%
Heart Failure, 8%
Hemochromatosis, 4%Cholestasis, 4%
Non-Diagnostic, 4%
NASH: Non-Alcoholic SteatohepatitisPSC: Primary Sclerosing CholangitisAIH: Autoimmune Hepatitis
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Results - Comparison With Previous StudiesN Approach
Needle (19G)
Median # of Passes
Median TSL (mm)
Median CPT
Mean TSL (mm)
Mean CPT
Mathew (2007) 2 Left Lobe Core 2 9 - 8.75 -Dewitt (2009) 21 Left Lobe Core 3 9 2 - -Stavropoulus (2012) 22 Left Lobe FNA 2 36.9 9 - -Gor (2014) 10 Left Lobe FNA 3 13 8 14.4 9.2
Sey (2016)45 Left Lobe Core 3 9 2 10.1 3.230 Left Lobe Core 2 20 5 24.8 7.8
Dewitt (2015)7 Left Lobe Core - - - - 108 Left Lobe Core - - - - 1.3
Diehl (2015)68 Both Lobes FNA 2 40 17 - -34 Left Lobe FNA 2 32 13 - -8 Right Lobe FNA 2 49 14 - -
Pineda (2016)110 Both Lobes FNA 3 38 13 - -34 Left Lobe FNA 2 32 13 - -68 Right Lobe FNA 2 40 17 - -
Current Study 24 Left Lobe Core 2 65.6 31.5 65.3 34.5
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Gallbladder Drainage
• Used in patients with advanced liver disease as a bridge to transplant and as destination therapy in non-transplant patients
• Can be performed transpapillary at ERCP AND without biliary sphincterotomy
• Can be performed transmurally using EUS
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Transpapillary Drainage
• Performed using ERCP techniques• Nasobiliary tube = stent placement• Advantages
• Can be performed without sphincterotomy• Can be used when transmural approach not ideal• Does not preclude surgery
• Disadvantages • Traversing cystic duct• Limited diameter stents
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How is Transmural Drainage Performed?
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EUS Gallbladder Drainage
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Transmural Drainage
• Advantages• Large diameter stents• Can allow direct gallstone interventions
• Disadvantages • Can preclude laparoscopic surgery• Difficult when gallbladder contracted• Technically challenging• Risks if failure after puncture
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Treatment of Gastric Varices
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Post-liver transplant Biliary Complications
• Usually performed at the time of ERCP• Management of
• Anastomotic and non-anastomotic strictures• Anastomotic and non-anastomotic leaks• Biliary stones and casts
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EUS-Guided Transhepatic Drainage
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Conclusions
• Endoscopic therapy can play a key role in the diagnosis and management of liver disease
• Endoscopic management outside of esophageal variceal banding consists of ERCP and EUS modalities
• Endoscopic management of complex liver disease is done in the context of a multidisciplinary approach with hepatologists and hepatobiliary surgeons
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