Optimal management of biopsy-proven low-grade gastric dysplasia

Table 1 Common reporting classifications of gastric epithelial neoplasia

Vienna classification[11,20]	WHO[21]	JGCA[19]
Negative for neoplasia/dysplasia		Group 1; Normal tissue or non-neoplastic lesion
Indefinite for neoplasia/dysplasia		Group 2; Material for which diagnosis of neoplastic or non-neoplastic lesion is difficult
Noninvasive neoplasia, low grade (low-grade adenoma/dysplasia)	Low-grade intraepithelial neoplasia	Group 3; Adenoma
Noninvasive neoplasia, high grade	High-grade intraepithelial neoplasia
High grade adenoma/dysplasia		Group 4; Neoplastic lesion that is suspected to be carcinoma
Noninvasive carcinoma		Group 5; Carcinoma
Suspicious of invasive carcinoma
Invasive carcinoma	Carcinoma

WHO: World Health Organization; JGCA: Japanese Gastric Cancer Association.