Second re-irradiation: Efficacy, dose and toxicity in patients who received three courses of radiotherapy with overlapping fields

Huda Abusaris, Pascal Storchi, Rene Brandwijk, J.J.M.E. Nuyttens

Research output: Contribution to journalArticleAcademicpeer-review

31 Citations (Scopus)


Purpose: To explore the outcome, cumulative dose and toxicity in 23 patients after a third radiation treatment, with a partial or complete overlap of the previous two irradiated regions. Methods and material: The dose summation of the three radiation plans was made by the planning system. For patients treated with cyberknife or brachytherapy dose summation was done by dose point calculations. Efficacy and toxicity was scored by looking at the reduction of tumor, pain and bleeding. Results: Symptomatic response was observed in 81% and 73% of the patients after, respectively, the third and second radiation. The median cumulative maximum dose to the tumor and its regions was 133 Gy(3) (range: 82-496 Gy(3)). The median corrected cumulative dose for the rectum, bowel and bladder resulted in 91 Gy(3), 73 Gy(3) and 79 Gy(3), respectively. Grade 3 acute skin toxicity was only seen in the third radiation course. Conclusion: The constraints of 100 Gy(3) for rectum, 90 Gy(3) for bowel and 110 Gy(3) for bladder are safe and can be used as guidelines in the decision for re-irradiation. Symptomatic relieve was seen in 81% of the patients with low grade 3 and no grade 4 acute and late toxicity. (C) 2011 Elsevier Ireland Ltd. All rights reserved. Radiotherapy and Oncology 99 (2011) 235-239
Original languageUndefined/Unknown
Pages (from-to)235-239
Number of pages5
JournalRadiotherapy and Oncology
Issue number2
Publication statusPublished - 2011

Cite this