Study of Previously Collected Blood and Tissue Samples From Patients With Nasopharyngeal Carcinoma,Laryngeal Carcinoma and Hypopharyngeal Carcinoma

Head and neck malignant tumors, especially nasopharyngeal carcinoma in southern China with the high incidence, its incidence, treatment, prognosis or tumor markers in serum has been a hot research with little progress.In our study, we collect NPC-based collection including the blood samples of laryngeal, hypopharyngeal cancer, separating serum and white blood cells stored in -80 degrees，while tissues are frozen in liquid nitrogen and embedded in paraffin。 Patient treatment and prognosis are combined in order to find for markers of molecular biology used for early diagnosis, predicting prognosis and being sensitive to chemotherapy and radiotherapy.