ESTRO PT 2018

Re-irradiationof Rectal Cancer P/O Local Recurrence Patients and Treatment Characteristics

（ 2006.4 ～ 2013.1 : 47Cases ）

61y （ 37 ～ 76y ）

Age

Male ／ Female ＝ 38 ： 9

Male ／ Female

Presacrum

20

Tumor Sites The dose of Carbon Ion is 70.4GyE/16fr Side wall 19

Perineal

8

Neo- or Adjuvant

16

Indication for prior treatment

31

For recurrent tumor

48.5Gy(20-70)

Prior Rad Dose

28.3 months(4-156)

Retreatment Interval