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Table 2 Comparison of the Cleveland Clinic’s Data with Major Series of Patients with Recurrent Disease treated with IORT

From: Intraoperative radiation therapy with the photon radiosurgery system in locally advanced and recurrent rectal cancer: retrospective review of the Cleveland clinic experience

Series # Pts Local Control Distant Metastases Survival
MayoClinic (8) 607 3-year: 65% 3-year: 49% MS: 36 mo
     5-year: 30%
MGH(9) 49 5-year: 35% Overall: 67% 5-year: 27%
Norway (10) 59 5-year: Not Reported 5-year: 30%
   R0: 70%   
   R1: 50%   
Netherlands (11) 147 5-year: 54% Not Reported MS: 28 mo
     5-year: 32%
Spain (12) 27 2-year: 26% 41% 5-year: 12%
France (13) 73 3-year: 31% Not Reported 3-year: 31%
Cleveland Clinic 32 3-year: 56% 3-year: 64% MS: 32 mo
     5-year: 16%