Study to Evaluate Induction Chemotherapy Using Docetaxel, Cisplatin and Fluorouracil in Concurrence With Intensity-modulated Radiotherapy for Local Recurrent Nasopharyngeal Carcinoma (NPC)

Study Objective: Primary 1\. To evaluate the complete response (CR) rate with induction chemotherapy using Docetaxel, Cisplatin and Fluorouracil(TPF) followed by Docetaxel plus Cetuximab (TC) in concurrence with intensity-modulated radiotherapy (IMRT). Secondary 1. To determine the overall response rate. 2. To determine the locoregional and distant control rate 3. To determine the progression-free survival (PFS) 4. To determine the overall survival (OS) 5. To determine the safety of the induction chemotherapy and concurrent chemoradiation plus Cetuximab.