Localized prostate cancer treated with intensity-modulated radiotherapy

Lorenzo Livi, Fabiola Paiar, Fabrizio Banci-Buonamici, Gabriele Simontacchi, Beatrice Detti, Mauro Gacci, Nicola Mondaini, Federico Nelli, Paolo Bastiani, Maurizio Pertici, Raffaello Mungai, Pietro Ponticelli, Giampaolo Biti
Tumori 2006, 92 (3): 197-201

AIMS AND BACKGROUND: The development and use of new radiotherapy techniques, especially 3D conformal radiotherapy or intensity-modulated radiotherapy, has allowed the safe application of high doses of external beam radiotherapy without increasing toxicity. The aim of this analysis was to describe the acute and when possible late toxicity and the feasibility on using intensity-modulated radiotherapy into our routine work.

PATIENTS AND METHODS: From June 2003 to December 2004, 60 patients with prostate cancer underwent high dose (80 Gy) radiotherapy treatment with intensity-modulated radiotherapy at the University of Florence. In the current analysis, we included patients without clinical or radiographic evidence of distant disease at the time of the first evaluation in the radiotherapy unit.

RESULTS: Intensity-modulated radiotherapy treatments were delivered successfully without any interruption or technical problem. High-dose intensity-modulated radiotherapy was well tolerated acutely. Four patients (10%) developed grade 1 late rectal toxicity after completion of intensity-modulated radiotherapy and 8 patients (20%) developed grade 1 late urinary symptoms.

CONCLUSIONS: Intensity-modulated radiotherapy is the approach of choice for high-dose radiotherapy delivery. No patient had severe toxicity (grade 3) despite the high dose delivered. From a cost-benefit point of view, our experience shows that delivery of intensity-modulated radiotherapy requires only minor corrections to the ordinary activity schedule.

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