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Table 1 Patient tumor staging

From: Optimal organ-sparing intensity-modulated radiation therapy (IMRT) regimen for the treatment of locally advanced anal canal carcinoma: a comparison of conventional and IMRT plans

N0–N1 group

N2–N3/T4 group

No. 1

No. 2

No. 3

No. 4

No. 5

No. 6

No. 7

No. 8

No. 9

No. 10

T2 N0

T3 N0

T3 N0

T2 N1

T3 N1

T4 N2

T1 N2

T4 N1

T3 N2

T4 N2