Nasopharyngeal carcinoma （NPC） is rare in most countries, especially in Europe and NorthAmerica （incidence rate below 1/100 000 people per year）. However, it has a high incidence in several southern areas in China...Nasopharyngeal carcinoma （NPC） is rare in most countries, especially in Europe and NorthAmerica （incidence rate below 1/100 000 people per year）. However, it has a high incidence in several southern areas in China, especially in the Cantonese region, including Guangzhou city, where the incidence rate is approximately 30-80/100 000 people per year. In the high incidence areas, more than 95% NPCs are poorly differentiated （WHO types 2 and 3）, which are sensitive to radiotherapy and chemotherapy. Besides its special epidemiological and pathological characteristics,展开更多
基金This work was supported by the Guangdong Social Developed Projectof Science and Technology (No.2003-245)
文摘Nasopharyngeal carcinoma （NPC） is rare in most countries, especially in Europe and NorthAmerica （incidence rate below 1/100 000 people per year）. However, it has a high incidence in several southern areas in China, especially in the Cantonese region, including Guangzhou city, where the incidence rate is approximately 30-80/100 000 people per year. In the high incidence areas, more than 95% NPCs are poorly differentiated （WHO types 2 and 3）, which are sensitive to radiotherapy and chemotherapy. Besides its special epidemiological and pathological characteristics,
