Tissue microarray-chip featuring computerized immunophenotypical characterization more accurately subtypes ampullary adenocarcinoma than routine histology

Table 1 Categories used to classify ampullary adenocarcinomas

	Pure histological classification	Basal histological classification	Molecular and histological classification
AACs	5 Categories	4 Categories	3 Categories
Tubular	Pure INT	Pure INT	INT
	Mixed INT-predominant	Mixed
	Mixed PB-predominant		PB
	Pure PB	Pure PB
Non-tubular	Other	Other	Other

AACs: Ampullary adenocarcinomas; INT: Intestinal; PB: Pancreato-Biliary.