Palliative care, Radiation therapy, 3D conformal radiotherapy, Intensity-modulated radiation therapy, Palliative radiot...herapy, Stereotactic radiosurgery, Intraoperative radiation therapy, Proton therapy, VMAT, Stereotactic body radiotherapy, Bone tumor, Breast cancer, Pediatric central nervous system tumor, Brain metastasis, Skull base tumor, Sarcoma, Soft tissue sarcoma, Childhood cancer