Abstract：Objective In order to investigate the clinical features and influence factors for incidence in patients with radiation-induced external auditory canal carcinoma (RIEACC). Methods The nasopharyngeal carcinoma (NPC) 16 patients who were diagnosised RIEACC after radiotherapy in the Sun Yat-Sen Memorial Hospital of Sun Yat-Sen UniversityfromJanuary 1990 to December 2017 wereretrospectively analysis. The influence factors analysis were used Logistic regression analysis. Results Univariate analysis showed that age,somking history,family history of cancer and NPC stage were the influencing factors. Multi-factor logistic regression analysis showed that age,family history of cancer and NPC stage were independent risk factors. Conclusions RIEACC is rare complication of NPC patients received radiotherapy,which is also a multifactorial outcome. Age,family history of cancer and NPC stage is preliminary the main influencing factor. Although RIEACC has a low incidence,its malignancy should be highly vigilant.
Ma Shuang,Li Liting,Ma Yujia et al. Preliminary analysis of the factors influencing the secondary externalauditory canal carcinomaof nasopharyngeal cancer[J]. Chinese Journal of Radiation Oncology, 2019, 28(9): 657-659.
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