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Copyright ©2013 Baishideng Publishing Group Co.
World J Gastrointest Oncol. Dec 15, 2013; 5(12): 222-229
Published online Dec 15, 2013. doi: 10.4251/wjgo.v5.i12.222
Table 1 Dworak classification for gastrointestinal tumors
Dworak classification
Dworak grade 0Is define as no regression
Dworak grade 1Is define as prevalence of active cells and fibrosis/necrosis
Dworak grade 2Is define as many of fibrosis or necrosis with active cells easier to find
Dworak grade 3Is define as scarce neoplastic cells, hard to detect
Dworak grade 4Is define as absence of tumor cells