Proton Therapy for Reirradiation of Progressive or Recurrent Chordoma.

Definitive reirradiation for locoregionally recurrent non-small cell lung cancer with proton beam therapy or intensity modulated radiation therapy: predictors of high-grade toxicity and survival outcomes.

Feasibility of proton beam therapy for reirradiation of locoregionally recurrent non-small cell lung cancer.

Special cases for proton beam radiotherapy: re-irradiation, lymphoma, and breast cancer.

Re-irradiation of recurrent head and neck carcinomas: comparison of robust intensity modulated proton therapy treatment plans with helical tomotherapy.

Re-irradiation with scanned charged particle beams in recurrent tumours of the head and neck: acute toxicity and feasibility.

Proton reirradiation of recurrence rectal cancer: dosimetric comparison, toxicities, and preliminary outcomes.

Reirradiation for recurrent head and neck cancer.

Retreatment of recurrent head and neck cancer in a previously irradiated field.

Increasing frequency of reirradiation studies in radiation oncology: systematic review of highly cited articles.