1Sham JST,Choy D,Prognostic factors of nasopharyngeal carcinoma,a review of 759 patients.Br J Raidol,1990,63:51-58.
2Schablinger PR,Reddy S,Henderickson FR,et al.Carcinoma of the nasopharynx,survival and pattems of recurrence.Int J Radiat Oncol Biol Phys,1985,11:2081-2084.
3Staunton MJ,Mcrcpi MB,Gaffney EF.Tumor type is a determinant of susceptibility to Apoptosis.Anatomic Pathology,1995,103:300-307.
4Levine EL,Renehan A,Gossiel R,et al.Apoptosis,intrinsic radiosensitivity and prediction of radiotherapy response in cervical carcinoma.Radiother Oncol,1995,37:1-9.
5Lee AWM,Law SCK,Foo W.Retrospective analysis of patients with nasopharyngeal carcinoma treated during 1976-1985.survival after local recurrence.Int J Radiat,Oncol Biol Phys,1993,26:773-782.
6Wang CC.Re irradiation of recurrent nasopharyngeal carcinoma,treatment techniques and results .Int J Radiat Oncol Biol Phys,1987,13:953-956.
8Lee AWM,NPC recurrence revisited.2nd Hong Kong International Cancer Congress,1995.
9Nicholls JM,Sham JST,Choy D,et al.In-situ carcinoma adjacent to recurrent nasopharyngeal carcinoma.Evidence of a new growth?Pathol Res Pract,1993,189:1067-1070.
10Peters LJ,Fletcher GH,Cause of failure of radiotherapy in head and neck cancer.Radiother Oncol,1983,1:53-63.
