Objective To explore the role of human papillomavirus (HPV) in squamous cell carcinoma of the larynx.Methods A cohort of 152 laryngeal squamous cell carcinoma (LSCC) patients,40 premalignant lesions of the larynx,and 40 vocal fold polyp patients was evaluated for the expression of HPV16 E7 protein by immunohistochemistry (IHC).E7 protein expression was correlated with clinicopathological features and outcomes.Results The expression of E7 protein in vocal fold polyp was negative,and it's positive expression in precancerous lesions and laryngeaI carcinomas was 2.5％,and 32.9％,respectively.There were no other significant clinical or demographic differences between pl6-positive and-negative cases.There was no difference in overall survival (OS) between E7-positive and-negative patients with 5-year survival of 79％ and 66％ for p16 positive and negative patients,respectively (P =0.581).There was no statistically significant difference in failure-free survival (FFS) with 5-year FFS of 57.8％ and 42.3％ for p16 positive and negative patients,respectively (P =0.579).Conclusions E7 expression is infrequent in laryngeal carcinomas.There are no statistically significant correlations between E7 IHC status and OS or FFS.

Objective To understand the distribution of inhaled allergens throughout Hainan province and explore effective preventive measures against allergen by examining the serum allergen of patients with chronic rhinosinusitis (CRS), which will provide evidence for specific immunotherapy for treating CRS. Methods Three hundred and eighteen CRS patients underwent Phadiatop blood test by using the UniCAP 100 , a completely automatic autoanalyser. Allergen-specific IgE of 7 common allergens were tested and the concentration of total immunoglobulin E (TIgE) was collected and evaluated. Results The positive rates of the serum TIgE and inhaled allergens were 64.15% and 37.74% respectively. The incidences of the positive serum SIgE is 33.96%. Among the positive cases, 28.30% of the inhaled allergens were dermatophagoides pteronyssinus, 27.36% for tropical mites, 21.07% for dermatophagoides farinae, 13.52% for cockroach, 11. 64% for house dust, 7. 86% for cat dander and 0.63% for dog dander. The incidences of positive TIgE and SIgE were not significantly different between patients with nasal polyps and sinusitis only. Conclusions Dermatophagoides pteronyssinus, tropical mites and dermatophagoides farinae are the main inhaled allergens for CRS patients in Hainan.

Objective To investigate the clinical effects of radical intensity-modulated radiotherapy (IMRT) combined with concurrent chemotherapy in the treatment of metastatic nasopharyngeal carcinoma. Methods Ninety patients with metastatic nasopharyngeal carcinoma in the First Affiliated Hospital of Hainan Medical University from August 2010 to April 2015 were selected as the research objects. All the patients were randomly divided into the observation group (45 cases) and the control group (45 cases) according to the random lottery envelope. The control group was treated with conventional chemotherapy treatment, and the observation group was treated with radical IMRT based on the treatment of the control group. The efficacy of the patients in both groups was evaluated after the treatment for 4 periods. Results The effective rate in the observation group was higher than that in the control group [66.7 % (30/45) vs. 33.3 % (15/45); χ2= 4.552, P＜ 0.05]. In the observation group, there were 3 cases of radiation esophageal injury and 3 cases of lung injury, and the incidence rate was 13.3 % (6/45), bringing the better treatment outcome. The incidence of side effects such as hair loss, nausea and vomiting, liver and kidney damage, bone marrow suppression in the observation group was 71.1 % (32/45), which was higher than that in the control group [66.7 % (30/45)] and there was no significant difference (χ 2= 0.331, P＞ 0.05). All the patients were followed up. 1 yeas and 2 year survival rates in the observation group were 95.6 % (43/45) and 86.7 % (39/45) respectively, while the control group were respectively 75.6 % (34/45) and 64.4 % (29/45) (χ2values were 6.393 and 5.309, both P＜0.05). Conclusion Radical IMRT combined with concurrent chemotherapy for metastatic nasopharyngeal carcinoma can improve the therapeutic effect and show good safety, and the radiation damage would not affect the treatment process.