Gastric Composite Tumor of Alpha Fetoprotein-Producing Carcinoma/Hepatoid Adenocarcinoma and Endocrine Carcinoma with Reference to Cellular Phenotypes

Table 1

Phenotypic classification. Gastric carcinomas were classified four categories as follows; intestinal, mixed, gastric, and null (unclassified) phenotypes. These categories were decided by immunohistochemical finding of MUC2, MUC5AC, and MUC6, and CDX2 and SOX2.

	MUC5AC(−), and MUC6(−), and SOX2(−)	MUC5AC(+), or MUC6(+), or SOX2(+)
MUC2(+) or CDX2(+)	Intestinal type	Mixed type
MUC2(−) and CDX2(−)	Null type	Gastric type