Author/Institution # Tumor Site (#) Histology RT Type (# pt) Dose in CGE  5y-LC (%) 5y-OS (%) F/U in months (range)
Benk (MGH)[49] 18 SB (15) C-spine (3) All CH   P + Ph (18) Median, 69.0 63% 68%* Median, 72 (19-120)
Habrand (CPO)[50] 30 SB (16) C-spine (1)   Both (13) 27 CH 3 CS   P + Ph (29) P (1) Mean, 69.1 Mean, 65.3 77% (CH) 100% (CS) 81% (CH) 100% (CS) Mean, 26.5 (5-102)
Hug (LLUMC)[51] 13 SB 10 CH 3 CS   P (6) P + Ph (4) P + Ph (3) Median, 73.7 Median, 70.0 60% (CH) § 100% (CS) § 60% (CH)** 100% (CS) § Mean, 40 (13-92)
Rombi (PSI)[52] 26 SB (17) Axial Skel (9) 19 CH 7 CS   P (All)    Mean,  74.0 Mean,  66.0 81%(CH) 80% (CS) 89% (CH) 75% (CS) Mean, 46 (5-126)
*: patients with cervical spine chordoma had a significant worse survival than other skull base patients (p= 0.008);
**: overall survival of the males was significantly superior to female patients (p=0.002); § :at last follow up Abbreviations:
#: number of; RT: radiotherapy; pt: patients; LC: local control; OS: overall survival; F/U: follow up; SB: skull base; CH: chordoma; CS: chondrosarcoma; Skel: skeleton; P: protons; Ph: photons; y: year.
Table 1: Summary of studies using PT in pediatric Chordomas and Chondrosarcoma.