Radical resection of an adenocarcinoma at the gastroesophageal junction (GEJ) can be classified based on the completeness of the resection for removing residual tumor. This can be used to compare outcomes after different procedures.
Macroscopic Margin
Microscopic Margin
Visceral Metastasis Resected
Type
negative
negative
0
R0
negative
positive
0
R1
positive
positive
>= 0
R2
NA
NA
>= 1
R2
R0 lesions have the best prognosis while R2 have the worst.
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