Utility of multiple endoscopic techniques in differential diagnosis of gallbladder adenomyomatosis from gallbladder malignancy with bile duct invasion: A case report

Table 1 Various diagnostic techniques for evaluation of suspected malignant biliary strictures

Diagnostic modality	Sensitivity (%)	Specificity (%)	Accuracy (%)
ERCP brush cytology + biopsy	59	100	73
CT/MDCT	77	63	75
MRI/MRCP	88	95	80
CA 19-9 > 100	75	80	78
SOC-biopsy	60	98	79
FISH	70	89	87
EUS	88	90	74
ERCP + CLE	90	72	81
ERCP + IDUS	93	89	91

CT: Computed tomography; SOC-biopsy: Single-operator cholangioscopy-guided biopsy; FISH: Fluorescence in situ hybridization; EUS: Endoscopic ultrasound; IDUS: Intraductal endoscopic ultrasound; CLE: Confocal laser endomicroscopy; MRCP: Magnetic resonance cholangiopancreatography; ERCP: Endoscopic retrograde cholangio-pancreatography.