Hypofractionated Protontherapy in Chordomas and Chondrosarcomas of the Skull Base

"The therapeutic schemes that will be proposed to patients based on clinical criteria such as tumor size and relationship of the tumor with adjacent critical organs are:~* For chordomas: 37.5 Gy in 5 consecutive sessions of 7.5 Gy per fraction.~* For chondrosarcomas: 35 Gy in 5 consecutive sessions of 7 Gy per fraction."