The effect of three-dimensional conformal radiotherapy on locally recurrent nasopharyngeal carcinoma and on the expression of succinate dehydrogenase B

C.-X. Liu, H. Wang, X.-M. Qian, F.-X. Lu, S.-F. Zhuang, M.-X. Yang, F.-L. Wang, Y.-T. Wang

Department of Otolaryngology, Ji’ning First People’s Hospital of Shandong Province, Shandong, China. aynur.ersahin@hotmail.com

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• Oncology

OBJECTIVE: Investigate the effect of three-dimensional conformal radiotherapy (3DCRT) on locally recurrent nasopharyngeal carcinoma (NPC) on the expression of succinate dehydrogenase B (SDHB).

PATIENTS AND METHODS: Eighty-six patients diagnosed with locally recurrent NPC in our hospital were selected and divided into the control group (43 cases) and observation group (43 cases). Conventional two-dimensional radiotherapy was applied in the control group, and 3DCRT was adopted in the observation group. The curative effect of both groups was compared.

RESULTS: The effective rate and the degree of alleviation of the observation group were higher than those of the control group, and the differences were statistically significant (p<0.05). There were no differences in the occurrence rate of complications from radiotherapy between the two groups (p>0.05). The survival rate and median survival time of the observation group were significantly higher than those of the control group (p<0.05). The positive expression rate of SDHB in the observation group after radiotherapy was significantly higher than that of the control group (p<0.05), and the median survival time of patients with positive expression of SDHB was significantly higher than patients with negative expression (p<0.05).

CONCLUSIONS: 3DCRT applied for treatment of locally recurrent NPC was safe and effective. It also improved the positive expression rate of SDHB, which was associated with increased survival time.

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