Clinical Observation of External Radiotherapy Combined with Intra-cavity Radiotherapy in the Treatment of Nasopharyngeal Carcinoma

31 patients with nasopharyngeal carcinoma treated by external radiutherapy plus intra-cavity adjacent distance high dose rate radiotherapy from 1, 1997 to 12, 1997 in our hospital are reported,and compared with 30 nasopharyngeal carcinoma before 1997,because ofslowly disappeared tumors or being uncontrolled at in creased dose, these 30 patients weretreated by external radiotherapy alone at increased dose for the disappearance of tumors,the former group is fast.There is no significant differece for the reaction on nasopharynxcavity mucosa between two groups, but for the reaction on oral nucosa, the former groupwas lighter.