Objective To analyze the changes in angiopoietin-2(Ang-2)levels before and after microwave ablation(MWA)in patients with high-risk pulmonary nodule and its impact on postoperative recurrence.Method A total of 94 patients with high-risk pulmonary nodules admitted to Guizhou Aerospace Hospital from December 2019 to December 2021 were included and categorized into a recurrence group(n=30)and a non-recurrence group(n=64).Clinical data was compared between the two groups.Pearson correlation analysis was used to analyze the correlation between pre-treatment angiopoietin-2(Ang-2)levels and CT parameters.Logistic regression model,restricted cubic splines,threshold effect analysis,and receiver operating characteristic(ROC)curve were used to analyze the relationship between pre-treatment Ang-2 levels and postoperative recurrence.Kaplan-Meier survival curves were used to analyze the differences in overall survival among patients with different Ang-2 levels.Cox regression model was used to analyze the factors affecting patients'survival.Result Compared to pre-treatment levels within the same group,Ang-2 levels in both groups decreased significantly,with statistically significant differences(P<0.05).Pearson correlation analysis showed that pre-treatment Ang-2 levels were positively correlated with BF,BV,PS,and MTT.Ang-2 level was independently associated with postoperative recurrence.Results of ROC analysis indicated that pre-treatment Ang-2 had certain predictive value for postoperative recurrence(area under the curve=0.789).Restricted cubic spline analysis revealed a nonlinear dose-response relationship between pre-treatment Ang-2 and postoperative recurrence(P<0.05).Threshold effect analysis identified that the inflection point of Ang-2 affecting recurrence as 1905.41 pg/mL.Survival analysis demonstrated that the median overall survival of patients in the Ang-2<1905.41 pg/mL group was longer than that in the Ang-2≥1905.41 pg/mL group(P=0.039).Furthermore,Ang-2≥1905.41 pg/mL was an independent factor affecting patients'survival time.Conclusion The levels of Ang-2 decreased significantly in patients with high-risk pulmonary nodules after MWA,and pre-treatment Ang-2 level has certain predictive value for postoperative recurrence.

OBJECTIVE：To observe therapeutic efficacy and safe ty of Huhuang burn liniment on the prevention and treatment of radiation dermatitis patients with nasopharyngeal carcinoma （NPC）. METHODS ：Totally 129 NPC patients were collected from our hospital during Aug. 2018-Feb. 2020. They were numbered according to the order of radiotherapy ，the ones with odd number were included into observation group （65 cases）and the ones with even number into control group （64 cases）. Both groups received routine radiotherapy and skin nursing. Control group were evenly smeared with Shirun shaoshang cream in the radiation field during radiotherapy ，and observation group were smeared with Huhuang burn liniment. The smearing area should be 1 cm beyond the edge of radiation field ，3 times a day until the end of stage 1 radiotherapy（33-38 times in total ）. The skin lesions of the two groups were observed ；the appearance time and healing time of skin lesion ，RTOG score and NRS score were recorded. The levels of serum cytokines （TNF-α，IL-6，IL-8 and IL- 10）were detected in 2 groups at 0，15th and 30th time of radiotherapy. The occurrence of ADR was recorded in 2 groups during treatment. RESULTS ：The appearance time of skin lesion in observation group was significantly longer than control group ；the healing time of skin lesion in observation group was significantly shorter than control group （P＜0.01）. RTOG grading of radiodermatitis in the two groups was mainly grade 1，but no grade 3 or 4 was found. There was no significant difference in the proportion of patients with differen RTOG grades （P＞0.05）. The highest NRS score of control group and observation group were 3 and 2 points respectively ，and the proportions of patients with 0-3 points in the two groups were statistically significant （P＜0.05）. There was no significant difference in serum cytokine levels between @qq.com 2 groups at 0 time of radiotherapy （P＞0.05）. The serum cytokine levels of 2 groups were increased significantly at 15th @qq.com time of radiotherapy ， but t he observation group was significantly lower than control group at the same period （P＜0.05 or P＜0.01）. At 30th time of radiotherapy ，the cytokine levels of 2 groups decreased significantly ，compared with 15th time of radiotherapy ，the observation group was significantly lower than the control group at the same period （P＜0.05 or P＜0.01）；the levels of TNF-α，IL-6 and IL- 10 in control group as well as the level of IL- 6 in observation group were significantly higher than the same group at 0 time of radiotherapy （P＜0.05 or P＜0.01）. There was no ADR such as allergy ，rash，smear site infection in the two groups during the treatment. CONCLUSIONS ：Huhuang burn liniment has a good effect of preventing and treating radiation dermatitis of NPC patients ，delays the occurrence of skin lesion，shortens the healing time of skin lesion ，relieves pain and reduces the level of serum cytokines with good safety.