IgG4 Cholangiopathy

Table 2

Sensitivity and specificity of detection of IgG4⁺ plasma cells (≥10 cells/high power field) by ampullary, liver, and bile duct biopsies.

	Sensitivity	Specificity	Reference
Ampullary biopsy	80%	100%	[26]
	67%	100%	[27]
	53%	100%	[28]
	52%	91%	[29]
Liver needle biopsy	24%	100%	[30]
	60%	100%	[31]
	26%	100%	[15]
Bile duct biopsy	52%	97%	[29]