2017_SBRT_Course Book

• A 50 year old female with a history of papillary thyroid cancer • In 1979 was treated with Iodine-131 • Followed by external beam radiotherapy consisting of 40Gy Photon radiotherapy and 20Gy Electron radiotherapy • Details of radiotherapy techniques and doses to organs-at-risk are unknown • Developed breast cancer in 2002 and bone metastases in 2007 • In 2008, a palliative radiotherapy of thoracic vertebras 2-4 was performed with a total dose of 40Gy o 20 Gy were delivered using posterior wedged fields o 20 Gy were delivered using AP/PA fields with sparing of the spinal cord Case example: re-irradiation for verterbral metastasis

ESTRO SBRT 2017 - Matthias Guckenberger

07.09.17

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Case example: re-irradiation for verterbral metastasis

20 Gy AP/PA with SC sparing

20 Gy wedged fields

• In 2010, the patient suffered from recurrent pain in these vertebras and CT imaging showed progressive osteolytic metastases Ø Re-irradiation was offered

ESTRO SBRT 2017 - Matthias Guckenberger

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