• Laetitia Padovani, Pascal Pommier, Sébastien Clippe S, Isabelle Martel-Lafay, Claude Malet, Marc Poupart, Philippe Zrounba, Philippe Ceruse, Sophie Desmes, Christian Carrie, Xavier Montbarbon, and Chantal Ginestet.
• Department of Radiation Oncology, Centre Léon Bérard, Lyon, France.
• Int. J. Radiat. Oncol. Biol. Phys. 2003 May 1; 56 (1): 169-76.

PurposeTo assess local control, survival, and clinical and dosimetric prognostic factors in 25 patients with locally advanced maxillary or ethmoid sinus carcinoma treated by three-dimensional conformal radiotherapy (RT).Materials And MethodsSurgery was performed in 22 patients and was macroscopically complete in 16. Seven patients received chemotherapy (concomitant with RT in four). The following quality indexes were defined for the 95% and 90% isodoses: tumor conformity index, normal tissue conformity index, and global conformity index.ResultsThe median radiation dose to the planned treatment volume was 63 Gy, with a minimal dose of 60 Gy, except in 2 patients whose cancer progressed during RT. The maximal doses tolerated by the structures involved in vision were respected, except for tumors that involved the optic nerve. After a median follow-up of 25 months, 14 local tumor recurrences developed. The major prognostic factors were central nervous system involvement by disease and the presence of nonresectable tumors. The radiation dose and tumor conformity index value were not significant prognostic indicators. Two patients died of acute infectious toxicity, and two developed late ipsilateral ocular toxicity.ConclusionsImproving local control remains the main challenge in RT for paranasal tumors.

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