All of the following statements about Nasopharyngeal carcinoma are true, except

Radiotherapy: It is the treatment of choice for nasopharyngeal cancer. Stage I and II are treated by radiotherapy alone while stage III and IV require concomitant radiation and chemotherapy or radiation followed by chemotherapy. External beam radiation of 6000-7000 cGy can be delivered by the linear accelerator to the primary and both sides of the neck. More advanced techniques of radiotherapy such as three-dimensional conformal radiotherapy and intensity modulated radiotherapy (IM) are now being used more and more. (Ref: Diseases of Ear, Nose and Throat, P.L Dhingra, 7th edition, page 285)