R. Doro

Stereotactic body radiotherapy for cardiac and paracardiac metastases: University of Florence experience

PurposeThis study sought to evaluate acute toxicity and local control in patients who underwent extracranial stereotactic body radiation therapy (SBRT) for paracardiac and cardiac metastatic lesions, defined as such when located at a maximum distance of 1 cm from the heart or inside its parenchyma.Materials and methodsBetween January 2009 and May 2011, 16 patients with paracardiac and cardiac lesions were treated with SBRT. For dose specification, in 15 of 16 patients, the prescription dosage was 36 Gy in three fractions (70% isodose). In one patient, the target lesion was inside the heart, and the prescription dosage was 30 Gy in three fractions (70% isodose).ResultsRegarding response to stereotactic radiotherapy, we recorded one (6%) complete response (CR), six (37%) partial responses (PR), five (32%) stable disease (SD) and four (25%) local failures. Median interval to local failure was 5.2 (range, 3–12) months. The cause of death was distant progression of disease in all four patients. Compliance to treatment was excellent; no patient developed cardiological symptoms or electrocardiographic abnormalities, even months after SBRT.ConclusionsResults of our retrospective study indicate that SBRT represents a safe and effective treatment option for patients with cardiac and paracardiac metastases.RiassuntoObiettivoScopo di questo lavoro è valutare la tossicità acuta e il controllo locale nel trattamento di pazienti sottoposti a radioterapia stereotassica extracranica (SBRT) per lesioni metastatiche paracardiache e cardiache, definite come tali se localizzate entro 1 cm dal cuore o nel contesto del suo parenchimaMateriali e metodiFra gennaio 2009 e maggio 2011, 16 pazienti con lesioni paracardiache e cardiache sono stati sottoposti a SBRT. In 15/16 pazienti la dose prescritta è stata di 36 Gy in 3 frazioni (all’isodose del 70%). In un paziente la lesione target era intracardiaca, e la dose di prescrizione è stata di 30 Gy in 3 frazioni (all’isodose del 70%).RisultatiPer quanto concerne la risposta alla radioterapia stereotassica, è stata registrata 1 (6%) risposta completa (CR), 6 (37%) risposte parziali (PR), 5 (32%) stabilità di malattia (SD) e 4 (25%) progressioni locali. L’intervallo mediano alla progressione locale è stato di 5,2 mesi (range 3–12 mesi). La tolleranza al trattamento è stata ottimale; nella serie di pazienti trattati nessuno ha sviluppato segni o sintomi di natura cardiologica in conseguenza della SBRT.ConclusioniI risultati della nostra analisi retrospettiva indicano che la SBRT rappresenta una opzione terapeutica sicura ed efficace per metastasi cardiache e paracardiache.

Cyberknife Treatment for Low and Intermediate Risk Prostate Cancer

Cyberknife is an emerging treatment for early stage prostate cancer. Between October 2012 and January 2014, 32 patients were treated in our institution. Prescribed dose was 35–36.25 Gy in five fractions. Biochemical response was observed in 22 patients. Four patients experienced G2 acute genitourinary toxicity and in two cases we recorded G3 acute GU toxicity. 5 patients experienced G2 acute proctitis. At last follow up visit, all patients were still alive. 29 remained free of disease at last follow up appointment, while three developed a biochemical recurrence. Our experience confirms the efficacy and safety of Cyberknife for localized prostate cancer.

EP-1632: Spinal SBRT: improving plan quality using an existing database and a geometric parameter

S761 ________________________________________________________________________________ calculated under the assumption of stationary arclet delivery. The second method is a dedicated solution for mARC planning in Philips Pinnacle (V9.2 or higher) without the detour of an external software. In this approach, a SmartArc (VMAT) plan is created in the TPS with 8° final spacing of optimization points. Then a Pinnacle script is applied which duplicates and shifts the optimization points in such a way to separate phases of beam on and of MLC movement. This resulting plan is still treated like a SmartArc plan in the TPS, but irradiated as mARC at the linac. We present the proof-of-principle and dosimetric verification using the PTW Octavius rotation unit with 2D-array.

Radioterapia stereotassica extracranica per metastasi cardiache e paracardiache: esperienza dell'Università di Firenze

PurposeThis study sought to evaluate acute toxicity and local control in patients who underwent extracranial stereotactic body radiation therapy (SBRT) for paracardiac and cardiac metastatic lesions, defined as such when located at a maximum distance of 1 cm from the heart or inside its parenchyma.Materials and methodsBetween January 2009 and May 2011, 16 patients with paracardiac and cardiac lesions were treated with SBRT. For dose specification, in 15 of 16 patients, the prescription dosage was 36 Gy in three fractions (70% isodose). In one patient, the target lesion was inside the heart, and the prescription dosage was 30 Gy in three fractions (70% isodose).ResultsRegarding response to stereotactic radiotherapy, we recorded one (6%) complete response (CR), six (37%) partial responses (PR), five (32%) stable disease (SD) and four (25%) local failures. Median interval to local failure was 5.2 (range, 3–12) months. The cause of death was distant progression of disease in all four patients. Compliance to treatment was excellent; no patient developed cardiological symptoms or electrocardiographic abnormalities, even months after SBRT.ConclusionsResults of our retrospective study indicate that SBRT represents a safe and effective treatment option for patients with cardiac and paracardiac metastases.RiassuntoObiettivoScopo di questo lavoro è valutare la tossicità acuta e il controllo locale nel trattamento di pazienti sottoposti a radioterapia stereotassica extracranica (SBRT) per lesioni metastatiche paracardiache e cardiache, definite come tali se localizzate entro 1 cm dal cuore o nel contesto del suo parenchimaMateriali e metodiFra gennaio 2009 e maggio 2011, 16 pazienti con lesioni paracardiache e cardiache sono stati sottoposti a SBRT. In 15/16 pazienti la dose prescritta è stata di 36 Gy in 3 frazioni (all’isodose del 70%). In un paziente la lesione target era intracardiaca, e la dose di prescrizione è stata di 30 Gy in 3 frazioni (all’isodose del 70%).RisultatiPer quanto concerne la risposta alla radioterapia stereotassica, è stata registrata 1 (6%) risposta completa (CR), 6 (37%) risposte parziali (PR), 5 (32%) stabilità di malattia (SD) e 4 (25%) progressioni locali. L’intervallo mediano alla progressione locale è stato di 5,2 mesi (range 3–12 mesi). La tolleranza al trattamento è stata ottimale; nella serie di pazienti trattati nessuno ha sviluppato segni o sintomi di natura cardiologica in conseguenza della SBRT.ConclusioniI risultati della nostra analisi retrospettiva indicano che la SBRT rappresenta una opzione terapeutica sicura ed efficace per metastasi cardiache e paracardiache.

Stereotactic body radiotherapy for cardiac and paracardiac metastases: University of Florence experience@@@Radioterapia stereotassica extracranica per metastasi cardiache e paracardiache: esperienza dell’Università di Firenze

PurposeThis study sought to evaluate acute toxicity and local control in patients who underwent extracranial stereotactic body radiation therapy (SBRT) for paracardiac and cardiac metastatic lesions, defined as such when located at a maximum distance of 1 cm from the heart or inside its parenchyma.Materials and methodsBetween January 2009 and May 2011, 16 patients with paracardiac and cardiac lesions were treated with SBRT. For dose specification, in 15 of 16 patients, the prescription dosage was 36 Gy in three fractions (70% isodose). In one patient, the target lesion was inside the heart, and the prescription dosage was 30 Gy in three fractions (70% isodose).ResultsRegarding response to stereotactic radiotherapy, we recorded one (6%) complete response (CR), six (37%) partial responses (PR), five (32%) stable disease (SD) and four (25%) local failures. Median interval to local failure was 5.2 (range, 3–12) months. The cause of death was distant progression of disease in all four patients. Compliance to treatment was excellent; no patient developed cardiological symptoms or electrocardiographic abnormalities, even months after SBRT.ConclusionsResults of our retrospective study indicate that SBRT represents a safe and effective treatment option for patients with cardiac and paracardiac metastases.RiassuntoObiettivoScopo di questo lavoro è valutare la tossicità acuta e il controllo locale nel trattamento di pazienti sottoposti a radioterapia stereotassica extracranica (SBRT) per lesioni metastatiche paracardiache e cardiache, definite come tali se localizzate entro 1 cm dal cuore o nel contesto del suo parenchimaMateriali e metodiFra gennaio 2009 e maggio 2011, 16 pazienti con lesioni paracardiache e cardiache sono stati sottoposti a SBRT. In 15/16 pazienti la dose prescritta è stata di 36 Gy in 3 frazioni (all’isodose del 70%). In un paziente la lesione target era intracardiaca, e la dose di prescrizione è stata di 30 Gy in 3 frazioni (all’isodose del 70%).RisultatiPer quanto concerne la risposta alla radioterapia stereotassica, è stata registrata 1 (6%) risposta completa (CR), 6 (37%) risposte parziali (PR), 5 (32%) stabilità di malattia (SD) e 4 (25%) progressioni locali. L’intervallo mediano alla progressione locale è stato di 5,2 mesi (range 3–12 mesi). La tolleranza al trattamento è stata ottimale; nella serie di pazienti trattati nessuno ha sviluppato segni o sintomi di natura cardiologica in conseguenza della SBRT.ConclusioniI risultati della nostra analisi retrospettiva indicano che la SBRT rappresenta una opzione terapeutica sicura ed efficace per metastasi cardiache e paracardiache.